Lucky number of red envelopes

In the traditional culture of China, numbers and colors have auspicious meanings. People in China generally like the numbers 6, 8, 9, 99 and so on. The amount of red envelopes can be chosen according to one's own economic ability and the degree of blessing to the other party. Generally speaking, the amount of red envelopes should be an auspicious number, such as 66, 88, 99, etc. Also consider the acceptance of the other party.