September 7, 2014, evening.
Class 8, Grade 11. At the desks against the south wall of the classroom, Geng Lu had not arrived at school yet. Sitting in her seat was Chen Siqing from Class 10.
A Math Test Paper and scratch paper lay before the twin sisters, but both had set down their gel pens.
Chen Siyu sighed repeatedly. "Sigh, inequalities are so hard. I have no idea how to solve them."
One problem had stumped both sisters, leaving them unable to make any progress.
Chen Siyu looked ahead. Bai Yuxia's former deskmate seat now had an unfamiliar arrangement. She sighed. "Sis, we have to take back what we lost."
Chen Siyu had once been too comfortable, allowing Chai Wei, who had been transferred into the class, to take her seat. Homeless, she had ultimately ended up as Geng Lu's deskmate.
Yet in her heart, she still longed to return home—to the homeland beside Bai Yuxia...
Her older sister, Chen Siqing, said, "I can't solve it either."
While the two girls worried over it, Jiang Ning and Xue Yuantong entered the classroom.
Chen Siyu seemed to have found a savior. Once Jiang Ning took his seat, she hurriedly asked for help. "Jiang Ning, can you teach me this problem during evening self-study?"
Jiang Ning said, "No problem."
It was only a small favor.
Seeing this, Chen Siqing closed her test paper. The moment Chen Siyu saw her like that, she was heartbroken.
"Sis, I have Jiang Ning to help me, but you don't! Are you not going to work on the problem yourself? Math is your strength!"
Chen Siqing said, "Once he teaches you, you can teach me."
Chen Siyu became even more distressed. "Sis, we're only in Grade 11. There may be even stronger students in the class