The homophonic stems are as follows:

1. Zheng: Zheng is rising in the sun, which means that he is full of energy and also means sunrise.

2. Zheng: Zheng is typing, indicating patience and meaning of waiting.

3. Hu: Peanut, sesame and Hu, which means interesting and delicious.

4. Hu: braised chicken is rice, which means it has good taste and also means delicious food.