In the western countries, it is said that people believe in the bad number very much, the number 13 is thought to be the unlucky number, especially when it happens in Friday.

In the western countries, it is said that people believe in the bad number very much, the number 13 is thought to be the unlucky number, especially when it happens in Friday. There is a famous song called black Friday, so Friday plus the number 13 means the most unlucky day. While in my opinion, I don’t think the number has something to do with the luck.
在西方国家，据说人们很相信不好的数字，字数13就被认为是不幸运的数字，特别是当星期五那天是13号时。有一首很著名的歌曲叫《黑色星期五》，因此星期五加上数字13意味着最倒霉的一天。然而在我看来，我不认为数字和运气有任何的联系。

Just like the western countries, Chinese people also believe the lucky number. The number 4 is treated as the bad luck, because it sounds like dead in Chinese, so if people try to avoid using the number 4, they can have more chances to be successful. If people fail, they will blame for the unlucky number.
就如西方国家，中国人也相信幸运数字。数字4就被认为是不好的数字，因为4在中文里和死亡听起来很像。因此如果人们试着去避免使用数字4，他们就能有机会成功。如果人们失败了，就会责怪数字不好。

How can people contact their success with the number, if they are successful in doing what they want, it is their confidence that helps them make it instead of avoiding the bad number. People should work hard to realize their dreams, while believing the luck number helps them nothing at all. So don’t put your hope on the outer factors. 
人们怎么能把他们的成功和数字联系上呢，如果他们想要做的事情成功，那也是他们的自信帮助他们，而不是通过避免数字。人们应该通过努力工作来实现他们的理想，然而相信坏数字无法帮助他们。所以不要把希望放在外部的因素上。