C1310 The Principal Is Lending Money

Late at night, Class 3's classroom was still brightly lit, and so was the principal's office.

Fifty students from Class 3 were all in the classroom.

Some of them were sitting cross-legged with their eyes closed, some were frowning as they pondered. They kept recording their own problems, and some were helping their classmates analyze their problems. Jiaang Xin, Tang Wen, was the leader