This is a taboo for Tujia people. Tujia people's most taboo number is 36. In the eyes of Tujia people, the number 36 is "bad luck", and even the numbers of 3 kg 62, 3 yuan 6 jiao and 3 ft 6 inches are taboo. If you remember the serial number, when you count to 35, you will remember it from the first one. In this life, I am most afraid of my 36th birthday. At that time, you should wear red underwear or a red belt. It is said that this can relieve the suffocation caused by 36 years old. The folk proverb says: "Thirty-six, after the autumn, people will be thirty-six, and they will sell their houses if they don't go to court." Some people invite relatives and friends to celebrate their birthdays early when they are 36. Guests should set off firecrackers in the host's house to avoid suffocation. At the banquet, relatives and friends should congratulate the birthday party for good luck.

So those who believe it think it's bad luck. No matter where you come from. When it is widely spread, it will be believed.