How much lucky value does cfhd draw add at a time?

Activity introduction: Every lucky draw will increase the lucky value by 1 point, and if the lucky value reaches 70, you will get the skin of Silver Wing series.

Lucky value: every lucky draw will get a certain lucky value. The higher the lucky value, the greater the probability of winning the grand prize; After the lucky value reaches 70, the lucky draw will win the blade runner series, and the lucky value will be cleared. When the lucky value is not full, the blade runner series will also be reset.