他在城市进化论“<a href="https://weibo.cn/sinaurl?u=http%3A%2F%2Fmp.weixin.qq.com%2Fs%3F__biz%3DMzg2MjA5Mjc0OA%3D%3D%26amp%3Bmid%3D2247548191%26amp%3Bidx%3D1%26amp%3Bsn%3D19e900213aa1b4eaf4dfa858d493040b%26amp%3Bchksm%3Dce0f51bcf978d8aad3d7b889a1862d792d1e2e97ac2bc47267f76b26d4e4c20fd6fa6f242f54%26amp%3Bscene%3D21%23wechat_redirect" target="_blank"><em>大家的城市公开课</em></a>”第二期上提到，“我觉得我们不需要让一个城市去抵御10万年一遇的洪水、暴雨、干旱，也不需要修到应对万年一遇的程度，能应对百年一遇就可以了。”

zaishuibianjingdianyouwanlaojianquandiyi，qingwuxuanzeweikaifahuowurenweihudechangsuoyouyongxishui。canjiachengzuoshuishangkuaitingdengyoulanxiangmushiqingquanchengchuanhaojiushengyi，zaishuibianpaizhaoshiwumaoxiansheshui。在(zai)水(shui)边(bian)景(jing)点(dian)游(you)玩(wan)牢(lao)记(ji)安(an)全(quan)第(di)一(yi)，(，)请(qing)勿(wu)选(xuan)择(ze)未(wei)开(kai)发(fa)或(huo)无(wu)人(ren)维(wei)护(hu)的(de)场(chang)所(suo)游(you)泳(yong)戏(xi)水(shui)。(。)参(can)加(jia)乘(cheng)坐(zuo)水(shui)上(shang)快(kuai)艇(ting)等(deng)游(you)览(lan)项(xiang)目(mu)时(shi)请(qing)全(quan)程(cheng)穿(chuan)好(hao)救(jiu)生(sheng)衣(yi)，(，)在(zai)水(shui)边(bian)拍(pai)照(zhao)时(shi)勿(wu)冒(mao)险(xian)涉(she)水(shui)。(。)