I started looking for a job just after the Spring Festival in 20 years, but I haven't found a suitable job and I don't have much money on me. A big factory hired a security guard and said I would work for at least one year.
There is a saying: the body is the capital of the revolution, which means that we must solve our own food and clothing first in any case before we can talk about our ideals and life. So there is nothing wrong with being a security guard at the age of 20. Not only can you make money, but you can also feel the hardships of different industries.
Of course, if you have more choices, you'd better choose a better job. After all, man struggles upwards and water flows downwards.