Starting from the 10th of the first lunar month to the 10th of February, the Lingnan Allied Forces had been fighting fiercely with the Sui Army for a whole month. In this month, the Lingnan Allied Forces continuously broke through the five lines of defense of the Sui Army and reached the Nanhai City. At the same time, there were heavy casualties, with the entire army reduced by more than a quarter.
After more than a month of siege, the Lingnan Alliance