Can tickets be used multiple times to come and go? I saw that it says you can use them for 3 days, really?

Is only valid for three days, but if you check in after verifying your ticket, you can’t use it again when leaving; you’ll need to buy a new one.
Admission ticket inspection is required to enter the ancient town of Zhou Zhuang. Once you’re inside, if you want to go out and then re-enter again, you’ll need to buy another admission ticket.
It’s valid for only three days, but once you’ve gone through ticket inspection and outed, it can’t be used again. You’ll need to buy a new one then.
It must be used within three days, and it becomes unusable if the deadline is exceeded.
It’s only valid for three days, but after checking in and leaving, you can’t use it again; instead, you have to buy a new ticket.
Admission ticket needs to be verified upon entering Zhouzhuang Ancient Town, but if you leave and come back in again, you’ll need to buy another admission ticket.
It’s only valid for three days, but if you use it after checking in, you can’t use it again afterward; you’ll have to buy a new ticket.
It must be used within three days, and it cannot be used afterwards.