Hello poster, after level 8 of the Food Wars Rat Laser Gem, it can fire 5 lines of scanning laser. And a table of row numbers for each star rating is given:

Note: The cat’s eye gem is the same.

Number of star rows

0 1

1 1

2 1

3 2

4 2

5 3

6 3

7 4

8 5

9 6 (Scan the screen on Cookie Island)

10 7 (Scan the screen)