My strategy

Strategy 1
First, if the number 10 or less comes out, the next round of betting will come less than 10 or less.
Second, if you get more than 90 numbers, you'll have to bet over 90 on the next edition.
The third is when the first second persimmon comes in.
Strategy 2

First, when you find numbers below 10, you bet only the fifth time after the 1st team bet.
Second, if you find a number over 90 or higher, you will bet only the fifth time after the 1st team bet.

You can bat depending on the situation and feeling.