C457
After the summer vacation ended, Pei Yin and Du Mingjun began a new lifestyle.
Every morning, after the two of them got out of bed, Pei Yin would cook breakfast for them but Du Mingjun would still insist on doing simple fitness activities. After breakfast, Du Mingjun would send Pei Yin to school on his bicycle and then teach him at the school where he taught. At noon