1. Variety problem: Different varieties of Wogua have different growth habits, and some varieties may be easier to sit on melons.

2. Weather problems: Weather changes, such as sudden drop in temperature or rainfall, may affect the stability of sitting melons.

3. Pests and diseases: such as viral diseases and anthrax. , may affect the sitting position of lying hexagrams.

4. Management problems: If vines are not properly managed, the uneven distribution of vine nutrients may also affect the fruit setting of lying melons.

For the list of ingredients and production steps, the following is a simple Wogua recipe for your reference:

List of ingredients:

1 wogua, 100g pork, onion, ginger and garlic, salt, soy sauce, soy sauce, cooking wine, sugar and chicken essence.

Production steps:

1. Peel and seed watermelon and cut it into small pieces.

2. Dice pork and chop onion, ginger and garlic.

3. Put cold oil in a hot pot, add onion, ginger and garlic and stir-fry until fragrant.

4. Add diced meat and stir-fry until it changes color.

5. Add pumpkin pieces and stir fry for a few minutes.

6. Season with salt, soy sauce, soy sauce, cooking wine, sugar and chicken essence, and add appropriate amount of water.

7. Cover the pot and cook until the melon is cooked.

It should be noted that the above recipes are for reference only, and the specific production method and ingredient list should be adjusted according to personal tastes and needs.