The reason the eight brothers Fulu, Shou and Xi are so proactive is all thanks to the second sister-in-law Su Hongying.
Lianshan went up the mountain at night, caught two rabbits, and then caught a half basket of small miscellaneous fish down the river. Early the next morning, he packed everything and took it to Liu Shouyi's house, straight up saying he wanted to express a bit of gratitude for the second sister-in-law's help.