How do I write "One can ..." / "You can ..." (general personal pronoun) in Chinese? Which personal pronouns can I use in an instruction in Chinese to replace the English "one" or "you" when used as meaning "you, we or anyone else":

Examples in English:

"One can always be sure to find tasty tea in that shop."

"One should not spit on the sidewalk."

"You/one are allowed to smoke in the shop."
Which personal pronouns can I use in an instruction in Chinese to replace the English &quot;one&quot;

user3306356's answer did not answer this question. Yes, the subject (or it's pronouns) can be omitted if the meaning is clear.
But in Chinese grammar, the[ one can + main clause] structure does exist, it is [你可以 + main clause]
你 is not restricted to mean 'you' only, it can be a general pronoun that mean 'anyone'-- And it is usually omitted just as user3306356's answer suggested.
Example:

in '你可以在这里抽烟' (you/one can smoke here)
你 here refers to you and everyone else

One more example:

在这家工厂，你只有25分钟的午餐时间 (In this factory, you/one only have 25 minutes lunch time)
你 here refers to you and everyone else

'你可以在这里抽烟' can be rephrase to '这里可以抽烟' omit '你' and '在' because we know who we are speaking to and 这里 strongly implies 在这里
'在这家工厂，你只有25分钟的午餐时间' can be rephrase to '这工厂只有25分钟午餐时间' (We know who only get 25 minutes)
I said it many times, &quot;it is considered good form to omit everything you can omit, as long as the meaning is clear.&quot;