成都(dou)平原史(shi)前城(cheng)(cheng)(cheng)(cheng)址(zhi)包(bao)括(kuo)四川(chuan)省成都(dou)新津縣(xian)(xian)龍(long)馬(ma)鄉(xiang)的(de)寶墩古(gu)城(cheng)(cheng)(cheng)(cheng)址(zhi)、郫都(dou)區古(gu)城(cheng)(cheng)(cheng)(cheng)鄉(xiang)的(de)鄲(dan)縣(xian)(xian)古(gu)城(cheng)(cheng)(cheng)(cheng)址(zhi)、溫(wen)江(jiang)區萬春(chun)鎮的(de)魚鳧古(gu)城(cheng)(cheng)(cheng)(cheng)址(zhi)、都(dou)江(jiang)堰市(shi)青城(cheng)(cheng)(cheng)(cheng)鄉(xiang)的(de)芒城(cheng)(cheng)(cheng)(cheng)古(gu)城(cheng)(cheng)(cheng)(cheng)址(zhi)、崇州市(shi)上元鄉(xiang)的(de)雙河(he)古(gu)城(cheng)(cheng)(cheng)(cheng)址(zhi)及燎原鄉(xiang)的(de)紫竹(zhu)古(gu)城(cheng)(cheng)(cheng)(cheng)址(zhi)等,是迄今所(suo)知中(zhong)國(guo)西南(nan)地區發現(xian)年代早(zao)、規模大、分布(bu)密(mi)集的(de)史(shi)前城(cheng)(cheng)(cheng)(cheng)址(zhi)群,年代距今約4500~4000年左右。
成都平原(yuan)史前城址是四川考古學上一次全新的(de)發現和(he)突破(po)。對于建(jian)立四川地區(qu)新石器時代到青銅時代的(de)文化發展(zhan)序列、探(tan)索長江上游(you)地區(qu)文明起源等(deng)問(wen)題具(ju)有重要的(de)學術價值。
2001年(nian),成都平(ping)原史前城址被國(guo)務院公布為第(di)五批全(quan)國(guo)重(zhong)點文物(wu)保(bao)護單位。
位干(gan)四(si)川(chuan)省成都市(shi)新津縣城(cheng)西(xi)北的(de)龍(long)馬(ma)鄉寶(bao)墩村,地形奇特,在一馬(ma)平川(chuan)的(de)綠色沃野(ye)上凸現出一圈不規則(ze)的(de)脊梁似的(de)黃土埂子。埂內阡陌縱橫,溝渠交錯。溝底和(he)兩側往往會發(fa)現一些散碎的(de)磚(zhuan)瓦器物(wu)。1995年,成都市(shi)文(wen)物(wu)考(kao)古研究所(suo)、四(si)川(chuan)大學考(kao)古系及日(ri)本早(zao)稻田大學聯合對寶(bao)墩村進(jin)行考(kao)古發(fa)掘(jue),經四(si)個月發(fa)掘(jue)后(hou)確認,黃土埂子圈起的(de)地方是距今(jin)約四(si)、五(wu)千年的(de)古城(cheng)遺址,散碎的(de)磚(zhuan)瓦器物(wu)是蜀地先(xian)民早(zao)在四(si)、五(wu)千年前就進(jin)入文(wen)明的(de)物(wu)證(zheng),比(bi)三(san)星堆和(he)金(jin)沙遺址年代還要早(zao),屬(shu)成都平原古蜀文(wen)明的(de)早(zao)階(jie)段(duan)。
寶墩古(gu)城遺(yi)址(zhi)系龍山時代古(gu)城遺(yi)址(zhi),對探索長江上(shang)游地區(qu)的文明起(qi)源(yuan)有著極為重(zhong)要(yao)(yao)的意(yi)義,是繼(ji)廣漢(han)三星堆藏坑之后,四川(chuan)地區(qu)又一重(zhong)要(yao)(yao)發(fa)現,在中外考古(gu)界引起(qi)了轟動,并在1996 年全國十(shi)大考古(gu)新發(fa)現中排名第三。
地(di)處(chu)成(cheng)都(dou)平(ping)原腹(fu)心地(di)帶的(de)(de)郫都(dou)區古(gu)城(cheng)(cheng)鄉,當地(di)老百姓傳說為(wei)三國蜀漢丞相(xiang)諸(zhu)葛亮養馬的(de)(de)“養馬城(cheng)(cheng)”。城(cheng)(cheng)址(zhi)平(ping)面(mian)(mian)呈長方(fang)形,城(cheng)(cheng)垣(yuan)長650、寬500米,面(mian)(mian)積(ji)32.5萬(wan)平(ping)方(fang)米;城(cheng)(cheng)址(zhi)中部發現有面(mian)(mian)積(ji)達(da)550平(ping)方(fang)米的(de)(de)禮(li)儀性(xing)建筑。文化層(ceng)堆積(ji)有新石(shi)(shi)器(qi)(qi)時代晚期(qi)、漢代和(he)宋(song)代三個時期(qi)的(de)(de)堆積(ji)。以(yi)新石(shi)(shi)器(qi)(qi)時代晚期(qi)文化層(ceng)豐富(fu),厚達(da)80厘(li)米,可分上(shang)、下(xia)兩層(ceng)。城(cheng)(cheng)內有房址(zhi),房址(zhi)地(di)面(mian)(mian)起建,呈方(fang)形,挖基槽,作(zuo)木骨泥墻。出土(tu)遺(yi)物主(zhu)要是陶(tao)(tao)器(qi)(qi)和(he)石(shi)(shi)器(qi)(qi)。下(xia)層(ceng)夾砂陶(tao)(tao)和(he)泥質陶(tao)(tao)多半,上(shang)層(ceng)則以(yi)夾砂陶(tao)(tao)為(wei)主(zhu),褐陶(tao)(tao)多見,灰(hui)陶(tao)(tao)較少,紋飾以(yi)繩紋、方(fang)格(ge)紋、戳(chuo)印(yin)紋為(wei)主(zhu),器(qi)(qi)形以(yi)外折(zhe)(zhe)沿花邊口(kou)罐(guan)、盤(pan)口(kou)形器(qi)(qi)、喇叭高頸(jing)罐(guan)、寬折(zhe)(zhe)沿深腹(fu)罐(guan)為(wei)常見,也有少量(liang)帶耳器(qi)(qi),另有陶(tao)(tao)紡輪。石(shi)(shi)器(qi)(qi)均磨制,有斧、錛、鑿等。
城址位于(yu)溫江(jiang)區萬春鎮魚(yu)鳧(fu)村,當(dang)地老(lao)百姓傳說是古蜀王魚(yu)鳧(fu)的(de)(de)都邑所(suo)(suo)在地,習稱“魚(yu)鳧(fu)城”。城址呈(cheng)平(ping)(ping)面(mian)呈(cheng)不規則的(de)(de)六邊(bian)形,面(mian)積40萬平(ping)(ping)方(fang)米(mi)。經調查(cha)、鉆探,了解(jie)到城垣(yuan)(yuan)呈(cheng)西北至東南(nan)向,南(nan)垣(yuan)(yuan)長約(yue)600米(mi);東垣(yuan)(yuan)呈(cheng)外弧形,長440米(mi),西垣(yuan)(yuan)長370米(mi),東北垣(yuan)(yuan)長280米(mi),城址面(mian)積約(yue)2萬平(ping)(ping)方(fang)米(mi)。南(nan)垣(yuan)(yuan)東端一(yi)處現存高(gao)3.5、頂(ding)寬(kuan)15.5、腳寬(kuan)30米(mi),墻建(jian)于(yu)臺地邊(bian)緣,墻的(de)(de)構筑(zhu)方(fang)法為(wei)(wei)斜坡堆筑(zhu)形式(shi),墻下有(you)(you)一(yi)層(ceng)(ceng)(ceng)小(xiao)卵(luan)石(shi)(shi)層(ceng)(ceng)(ceng),可能為(wei)(wei)墻基。墻外側(ce)也有(you)(you)卵(luan)石(shi)(shi)與土層(ceng)(ceng)(ceng)相間的(de)(de)層(ceng)(ceng)(ceng)位。系人工(gong)所(suo)(suo)為(wei)(wei)。城址中(zhong)(zhong)發現新(xin)石(shi)(shi)器(qi)(qi)(qi)(qi)時代(dai)(dai)晚期、漢代(dai)(dai)和(he)(he)唐代(dai)(dai)三個時期文(wen)化層(ceng)(ceng)(ceng),以新(xin)石(shi)(shi)器(qi)(qi)(qi)(qi)時代(dai)(dai)文(wen)化堆積豐富,集中(zhong)(zhong)在城址的(de)(de)東部和(he)(he)北部。所(suo)(suo)出陶(tao)器(qi)(qi)(qi)(qi)以夾砂(sha)褐陶(tao)為(wei)(wei)主(zhu)(zhu),夾砂(sha)灰(hui)陶(tao)、泥質灰(hui)陶(tao)和(he)(he)泥質褐陶(tao)較少(shao),還有(you)(you)少(shao)量(liang)(liang)黑(hei)皮陶(tao)。夾砂(sha)陶(tao)多(duo)見繩紋(wen)裝飾(shi),另有(you)(you)少(shao)量(liang)(liang)戳(chuo)印(yin)紋(wen)及(ji)圈足(zu)(zu)(zu)上的(de)(de)鏤孔(kong);泥質陶(tao)主(zhu)(zhu)要飾(shi)戳(chuo)印(yin)紋(wen)、附(fu)加泥條(tiao)上戳(chuo)印(yin)、篦劃平(ping)(ping)行線(xian)紋(wen)、水波紋(wen)及(ji)少(shao)量(liang)(liang)弦紋(wen)和(he)(he)瓦棱紋(wen)。以小(xiao)平(ping)(ping)底(di)器(qi)(qi)(qi)(qi)器(qi)(qi)(qi)(qi)底(di)施旋轉樣繩紋(wen)有(you)(you)特(te)色。器(qi)(qi)(qi)(qi)形以夾砂(sha)花邊(bian)口(kou)罐(guan)、小(xiao)平(ping)(ping)底(di)假圈足(zu)(zu)(zu)敞口(kou)罐(guan),泥質喇叭口(kou)高(gao)領罐(guan)、寬(kuan)折沿罐(guan)為(wei)(wei)代(dai)(dai)表。還有(you)(you)少(shao)量(liang)(liang)盤口(kou)形器(qi)(qi)(qi)(qi)和(he)(he)帶(dai)耳器(qi)(qi)(qi)(qi),其中(zhong)(zhong)圈足(zu)(zu)(zu)器(qi)(qi)(qi)(qi)較獨特(te),石(shi)(shi)器(qi)(qi)(qi)(qi)以小(xiao)型為(wei)(wei)主(zhu)(zhu),多(duo)為(wei)(wei)磨(mo)制,主(zhu)(zhu)要有(you)(you)錛、斧、鑿和(he)(he)穿孔(kong)石(shi)(shi)器(qi)(qi)(qi)(qi)。
城(cheng)址位于都江堰市青(qing)城(cheng)鄉芒城(cheng)村,當地老百姓(xing)俗稱“芒城(cheng)子(zi)”,傳說為(wei)明末張(zhang)獻忠于匆(cong)忙中(zhong)修建的“忙城(cheng)”。城(cheng)址平(ping)面(mian)呈不規則的長(chang)方形(xing)(xing),為(wei)內外雙(shuang)圈城(cheng)墻(qiang),內外城(cheng)墻(qiang)間有(you)壕溝,面(mian)積約12萬平(ping)方米(mi)。城(cheng)內堆(dui)積有(you)新石(shi)(shi)器(qi)(qi)(qi)時(shi)(shi)代(dai)(dai)和宋代(dai)(dai)兩(liang)大(da)時(shi)(shi)期的文化層(ceng)。以(yi)新石(shi)(shi)器(qi)(qi)(qi)時(shi)(shi)代(dai)(dai)文化層(ceng)為(wei)主(zhu)(zhu),可分5層(ceng),遺物(wu)以(yi)陶(tao)器(qi)(qi)(qi)為(wei)主(zhu)(zhu),還有(you)一(yi)定數量(liang)的石(shi)(shi)器(qi)(qi)(qi)。陶(tao)器(qi)(qi)(qi)種類(lei)較(jiao)少(shao),制(zhi)法(fa)以(yi)手制(zhi)加慢(man)輪修整為(wei)主(zhu)(zhu),泥質(zhi)陶(tao)所占(zhan)比(bi)重較(jiao)大(da),陶(tao)色(se)多(duo)紅褐和橙黃色(se),灰(hui)陶(tao)相對較(jiao)少(shao),陶(tao)質(zhi)較(jiao)軟(ruan),代(dai)(dai)表性器(qi)(qi)(qi)物(wu)有(you)喇叭(ba)口高頸罐(guan)(guan)、寬(kuan)折(zhe)沿盆和寬(kuan)折(zhe)沿罐(guan)(guan)、器(qi)(qi)(qi)蓋及少(shao)量(liang)帶柄圈足豆(dou)。器(qi)(qi)(qi)表以(yi)素(su)面(mian)為(wei)主(zhu)(zhu),紋(wen)(wen)(wen)(wen)飾(shi)中(zhong)主(zhu)(zhu)要見兩(liang)三道平(ping)行劃紋(wen)(wen)(wen)(wen)及由劃紋(wen)(wen)(wen)(wen)組合成(cheng)的幾(ji)何紋(wen)(wen)(wen)(wen)、少(shao)量(liang)凹弦紋(wen)(wen)(wen)(wen)等。夾砂陶(tao)中(zhong)以(yi)外褐內灰(hui)或內黑陶(tao)居多(duo),紋(wen)(wen)(wen)(wen)飾(shi)以(yi)繩紋(wen)(wen)(wen)(wen)為(wei)主(zhu)(zhu),另有(you)戳印紋(wen)(wen)(wen)(wen),器(qi)(qi)(qi)形(xing)(xing)以(yi)外折(zhe)沿紋(wen)(wen)(wen)(wen)唇花邊(bian)口罐(guan)(guan)和圈足器(qi)(qi)(qi)為(wei)代(dai)(dai)表,還有(you)一(yi)定數量(liang)的盤(pan)口形(xing)(xing)器(qi)(qi)(qi)。石(shi)(shi)器(qi)(qi)(qi)均磨制(zhi),有(you)斧、錛、鑿。
城(cheng)(cheng)(cheng)址(zhi)(zhi)位于崇州市上元鄉(xiang)芒城(cheng)(cheng)(cheng)村雙河場,當地(di)(di)俗稱“下芒城(cheng)(cheng)(cheng)”。古城(cheng)(cheng)(cheng)面(mian)積(ji)約15萬平(ping)方米(mi)(mi),城(cheng)(cheng)(cheng)址(zhi)(zhi)基本呈正南北方向,城(cheng)(cheng)(cheng)垣(yuan)分內外兩圈,內、外圈間距約15米(mi)(mi),東垣(yuan)內圈城(cheng)(cheng)(cheng)垣(yuan)保存好,長約450米(mi)(mi),城(cheng)(cheng)(cheng)垣(yuan)最高達(da)4米(mi)(mi),結構(gou)與都江(jiang)堰芒城(cheng)(cheng)(cheng)相似。對該遺(yi)址(zhi)(zhi)進行試掘時,發現人(ren)工(gong)柱(zhu)洞14個,內有(you)礎(chu)石(shi);其平(ping)面(mian)大致(zhi)呈“十”字形,面(mian)積(ji)超過60平(ping)方米(mi)(mi),與挖溝槽埋柱(zhu)的木骨泥墻(qiang)式房屋有(you)較(jiao)大的差別。此城(cheng)(cheng)(cheng)址(zhi)(zhi)地(di)(di)層堆積(ji)較(jiao)薄,遺(yi)物(wu)較(jiao)單純,陶器變化(hua)較(jiao)小;較(jiao)有(you)特色的出土(tu)器物(wu)是一件三孔石(shi)鉞和呈透(tou)明狀的燧石(shi)質石(shi)片(pian)石(shi)器。
位(wei)于成都(dou)平(ping)(ping)(ping)原西(xi)(xi)部(bu)崇(chong)州市區西(xi)(xi)南13公里(li)處(chu)的(de)燎原鄉紫竹村(cun),東(dong)北(bei)距(ju)(ju)西(xi)(xi)河(he)8公里(li),距(ju)(ju)岷江(jiang)21公里(li)。城(cheng)(cheng)址平(ping)(ping)(ping)面(mian)呈(cheng)長(chang)方(fang)(fang)形(xing)(xing)(xing)(xing),面(mian)積(ji)(ji)近(jin)20萬(wan)平(ping)(ping)(ping)方(fang)(fang)米(mi)(mi)(mi)。城(cheng)(cheng)垣分內、外兩圈(quan), 呈(cheng)“回”字(zi)形(xing)(xing)(xing)(xing),與已發(fa)現(xian)(xian)的(de)都(dou)江(jiang)堰(yan)芒城(cheng)(cheng)、崇(chong)州雙河(he)古城(cheng)(cheng)平(ping)(ping)(ping)面(mian)形(xing)(xing)(xing)(xing)制(zhi)相近(jin)。城(cheng)(cheng)垣一般寬(kuan)15米(mi)(mi)(mi)左右,內、外城(cheng)(cheng)垣間(jian)距(ju)(ju)約(yue)10米(mi)(mi)(mi),現(xian)(xian)存高度約(yue)1——1.5米(mi)(mi)(mi)。對(dui)紫竹古城(cheng)(cheng)的(de)試掘(jue)工(gong)作,先后(hou)在(zai)城(cheng)(cheng)址內東(dong)南部(bu)、西(xi)(xi)南部(bu)布探(tan)方(fang)(fang)發(fa)掘(jue),并對(dui)西(xi)(xi)垣內圈(quan)、北(bei)垣內圈(quan)城(cheng)(cheng)墻進(jin)行解剖,試掘(jue)面(mian)積(ji)(ji)121平(ping)(ping)(ping)方(fang)(fang)米(mi)(mi)(mi);清理(li)寶(bao)墩文化灰(hui)(hui)坑(keng)(keng)9個,紅燒(shao)土(tu)(tu)(tu)堆(dui)(dui)積(ji)(ji)1處(chu),柱洞1個。灰(hui)(hui)坑(keng)(keng)平(ping)(ping)(ping)面(mian)形(xing)(xing)(xing)(xing)狀(zhuang)分不(bu)規則形(xing)(xing)(xing)(xing)、長(chang)方(fang)(fang)形(xing)(xing)(xing)(xing)、圓形(xing)(xing)(xing)(xing)、橢圓形(xing)(xing)(xing)(xing)和三角形(xing)(xing)(xing)(xing)幾種,其(qi)中以不(bu)規則形(xing)(xing)(xing)(xing)灰(hui)(hui)坑(keng)(keng)較(jiao)為(wei)(wei)常見。6號(hao)灰(hui)(hui)坑(keng)(keng)坑(keng)(keng)口(kou)為(wei)(wei)第3層所(suo)壓,7號(hao)灰(hui)(hui)坑(keng)(keng)打破6號(hao)灰(hui)(hui)坑(keng)(keng),6號(hao)灰(hui)(hui)坑(keng)(keng)打破生土(tu)(tu)(tu)。平(ping)(ping)(ping)面(mian)形(xing)(xing)(xing)(xing)狀(zhuang)為(wei)(wei)不(bu)規則形(xing)(xing)(xing)(xing),西(xi)(xi)部(bu)有(you)(you)(you)(you)一近(jin)方(fang)(fang)形(xing)(xing)(xing)(xing)的(de)淺坑(keng)(keng)。灰(hui)(hui)坑(keng)(keng)長(chang)328厘(li)米(mi)(mi)(mi)、寬(kuan)200厘(li)米(mi)(mi)(mi),坑(keng)(keng)口(kou)距(ju)(ju)地表深(shen)25厘(li)米(mi)(mi)(mi)、距(ju)(ju)坑(keng)(keng)底深(shen)46——80厘(li)米(mi)(mi)(mi)。坑(keng)(keng)壁(bi)不(bu)規整,有(you)(you)(you)(you)直壁(bi)、亦有(you)(you)(you)(you)斜壁(bi),底大致平(ping)(ping)(ping)。灰(hui)(hui)黑色填土(tu)(tu)(tu),濕潤,略呈(cheng)沙(sha)性;雜有(you)(you)(you)(you)較(jiao)多炭(tan)屑。灰(hui)(hui)坑(keng)(keng)周邊壁(bi)、底結合處(chu),有(you)(you)(you)(you)內凹的(de)小坑(keng)(keng),或為(wei)(wei)腳窩(wo)。出土(tu)(tu)(tu)物(wu)(wu)極(ji)為(wei)(wei)豐(feng)富,有(you)(you)(you)(you)寶(bao)墩文化陶(tao)圈(quan)足(zu)尊、夾砂矮圈(quan)足(zu)、喇叭(ba)口(kou)高領罐、繩(sheng)紋(wen)花邊罐、篦劃紋(wen)泥質陶(tao)壺底片、橋形(xing)(xing)(xing)(xing)耳、紡輪和石錛等遺(yi)物(wu)(wu)。紅燒(shao)土(tu)(tu)(tu)堆(dui)(dui)積(ji)(ji)位(wei)于1號(hao)探(tan)方(fang)(fang)西(xi)(xi)北(bei)角,為(wei)(wei)第3層所(suo)疊壓,打破第4層。平(ping)(ping)(ping)面(mian)形(xing)(xing)(xing)(xing)狀(zhuang)略呈(cheng)圓形(xing)(xing)(xing)(xing),直徑約(yue)2米(mi)(mi)(mi),堆(dui)(dui)積(ji)(ji)厚約(yue)15厘(li)米(mi)(mi)(mi)。該(gai)堆(dui)(dui)積(ji)(ji)全(quan)由紅燒(shao)土(tu)(tu)(tu)塊組成,土(tu)(tu)(tu)塊堅硬,經火燒(shao)烤時間(jian)較(jiao)長(chang),可能(neng)是一灶坑(keng)(keng)所(suo)在(zai)。清理(li)部(bu)分沒有(you)(you)(you)(you)其(qi)它(ta)文化遺(yi)物(wu)(wu)出土(tu)(tu)(tu)。
成都平(ping)(ping)原(yuan)史前(qian)城(cheng)址于(yu)20世紀60年(nian)代(dai)、80年(nian)代(dai)考古(gu)調查(cha)時相(xiang)繼發現(xian)。發現(xian)有(you)(you)用于(yu)防御的高聳(song)城(cheng)墻(qiang)、禮儀性大房址、干欄(lan)式建筑(zhu)、木骨(gu)或竹骨(gu)泥墻(qiang)房址、長方(fang)(fang)(fang)形(xing)豎穴土坑(keng)墓和種類(lei)多(duo)樣的灰坑(keng),出(chu)土了(le)大量磨(mo)制精細的石器和裝飾(shi)精美的陶(tao)器。這些(xie)古(gu)城(cheng)址建筑(zhu)技術相(xiang)同,文化性質單一,是寶墩文化的中(zhong)(zhong)心聚落遺址。寶墩古(gu)城(cheng)平(ping)(ping)面(mian)(mian)呈(cheng)長方(fang)(fang)(fang)形(xing),面(mian)(mian)積(ji)達(da)60萬(wan)平(ping)(ping)方(fang)(fang)(fang)米(mi)(mi)(mi)。郫縣古(gu)城(cheng)地處成都平(ping)(ping)原(yuan)腹心地帶,平(ping)(ping)面(mian)(mian)也呈(cheng)長方(fang)(fang)(fang)形(xing),總(zong)面(mian)(mian)積(ji)30余萬(wan)平(ping)(ping)方(fang)(fang)(fang)米(mi)(mi)(mi),城(cheng)址中(zhong)(zhong)部(bu)發現(xian)有(you)(you)面(mian)(mian)積(ji)達(da)550平(ping)(ping)方(fang)(fang)(fang)米(mi)(mi)(mi)的禮儀性建筑(zhu)。魚鳧古(gu)城(cheng),平(ping)(ping)面(mian)(mian)呈(cheng)六邊形(xing),面(mian)(mian)積(ji)40萬(wan)平(ping)(ping)方(fang)(fang)(fang)米(mi)(mi)(mi)。芒(mang)城(cheng)古(gu)城(cheng),為內(nei)外(wai)(wai)雙(shuang)圈城(cheng)墻(qiang),內(nei)外(wai)(wai)城(cheng)墻(qiang)間有(you)(you)壕溝,面(mian)(mian)積(ji)11萬(wan)平(ping)(ping)方(fang)(fang)(fang)米(mi)(mi)(mi)。雙(shuang)河古(gu)城(cheng)、紫竹古(gu)城(cheng),其平(ping)(ping)面(mian)(mian)也均(jun)呈(cheng)長方(fang)(fang)(fang)形(xing),面(mian)(mian)積(ji)分別為11萬(wan)平(ping)(ping)方(fang)(fang)(fang)米(mi)(mi)(mi)、20萬(wan)平(ping)(ping)方(fang)(fang)(fang)米(mi)(mi)(mi)。