找了半天没找到 汗

haven't you got a user manual to refer to? commonly the user manual will tell you the jacking point. normally it is under the front doors.

朋友的车,没说明呢...
前门?
一般是在尾箱吧,可是我没找到...

it can have several points: front/rear jack points, front/back axle stand points. it depends on which part of the car you want to lift...

从车侧面看,靠近车底部,在车门下面的那一条,应该有记号.