What do Vietnamese think about the news that China is helping Cambodia build a canal?

?對(duì)于去過(guò)日本、韓國(guó)和中國(guó)的外國(guó)人來(lái)說(shuō),你認(rèn)為上海比東京和首爾落后、相同還是更發(fā)達(dá)?