What he means is that no matter what you do, there will be a backup plan. Gong Ming asked Lin Xiao to design the model for so long that it snowed heavily. Later, because of Coulee's backup plan, the result was shelved. Therefore, Gu told me that you are not the only one who likes Plan B, so do I.. When the first plan is not completed within a certain period of time, then the backup plan will appear.