Can you be a security guard if you are not tall?

I used to be a security guard in Shenzhen security company. You are tall enough to be a security guard. After all, the salary of the security industry is not very high, and it is basically not promoted. Also looked down upon. Most people look down on security guards and don't do it for a while! If you don't work hard, you will become lazy if you work too long! Security is not recommended.