You may have to unscrew the gear (3 screws) to access the right hand latch, but I am not sure of that.

也许你需要松开齿轮(3颗螺丝)来卸下右手边的卡子，不过我不是很确定。

youdao

Here is the lavatory. Open the door this way. Once getting inside, switch this pin to latch. Do not hurt your hand while opening the door.

这是卫生间，这样开门，进去后通过这个销子插门，小心开门时夹手。

youdao