How do you say no trespassing in Chinese?
I don't know in what situations you wanna to use it. So maybe in
Chinese it can be said 闲人免进(xian2 ren2 mian3 jin4) or 不得擅自闯入(bu4
de2 shan4 zi4 chuang3 ru4) or 禁止通行(jin4 zhi3 tong1 xing2).
闲人免进 usually used in front of an office room
不得擅自闯入 usually used in military
禁止通行 usually used when you drive a car
Hoping can be helpful for you.