The colleagues are quite nice.
There is no overtime pay. The insured salary bracket for labor insurance is set at the minimum wage, and the employee-paid portion is not deducted accurately.
Although the Labor Standards Act states that there is no probationary period, this company has one with no fixed duration. (They only convert you to a full-time employee when they feel you are okay; if they are short-staffed, it may be less than a month, but when they are not short-staffed, it may also last two months.) During the probationary period, employees are paid hourly and only receive the statutory minimum hourly wage. When things are not busy, they will ask you to go home early rather than let you work the full eight hours, so your probationary-period pay may be very low (if you start work at 11 a.m., you may be sent home as early as 3 p.m.).
The entire company prohibits taking leave on holidays (even part-time workers are not allowed to), but they may not necessarily tell you this during the interview, because they first want to trick you into coming to work and explain it later. Eventually, if they see that you keep requesting holidays off, they will tell you not to come in the next day.
The company does not provide labor and health insurance for employees during the probationary period, and even after you become a full-time employee, the company may still forget to enroll you in labor and health insurance.