1. Flour and yeast powder are ready, add water and knead to form a dough
2. The dough rises for more than an hour
3. Drizzle with oil
4. Sprinkle with appropriate amount of pork floss, ham, and chopped green onion
5. Roll up the dough and cut it into balls
6. After waking up for ten minutes, steam on fire for 12 minutes and simmer for 5 minutes
