You can use 2 9-star good cards plus 1 8-star good card plus 5 grass or 4 grass (5 grass is recommended, but I have also succeeded with 4 grass), if you have: VIP7 or above, guild If you have a synthetic house of 4 or above, you can waive the insurance. If not, it is recommended to add insurance. If you don't have enough money to add insurance, you can use a 9-star good card to change jobs, which has a higher probability. You can also use the following card padding method:

Strengthen several 3-star good cards and 1-star junk cards by 4, without adding four-leaf clovers, and it will be enough to explode five or six times in a row.

(This method is somewhat expensive, but think about it from the perspective of probability. I rarely succeed with a success rate of more than 30%)

Finally, I wish you success in strengthening!