Generally, the amount of gift money is also particular. The amount of gift money depends on the relationship between the congratulator and the congratulated. Gifts generally do not use integers, but also have homophonic goodwill, such as 128 yuan (easy to send), 168 yuan (send all the way), and this kind of mantissa is "8".
Some mantissas use "6" to mean Fulu, or 66 Dashun. If you get married, I will give it to you 139 yuan, which means "for life".