"Because..."
Ye Qiuli built up a bit of suspense before continuing her explanation:
"Actually, it's because I'm still just a tiny, obscure author, and I get a tiny bit of royalty payment every month, hehehe! I save all of it for my food money, which is why my little treasury keeps growing little by little! I'm saving up so I can buy some New Year goods for Teacher and Shiniang and go visit them this Chinese New Year, but now I'm not even sure when I'll be going back!"
Chapter 151