How long can the hotel doorman work?

If it's a three-star or four-star hotel, it's okay to work for ten or eight years. The salary is not high, but the tip is objective. The salary of a five-star doorman will be four or five thousand, and his consumption will be more. It's best to learn some knowledge, take an examination of a college or undergraduate course, and be promoted to a foreman or something, because this position is a youthful meal after all, and it is not old in China.