Cut the bones out of the chicken and boil 10 cups of water.
Meanwhile, cut the chicken meat into small pieces and mix with shrimps, soy sauce, salt, onion slices, green chilies, corn flour and 10 cups of water. Set aside.
When the water dries down to half of the original volume, then add the chicken meat mixture.
Add hot boiling water, around 4 cups, and cook until the water dries up to form a thick soup. This should take around 10-12 minutes.
Now crack 2 eggs and stir well.
Finally sprinkle the Thai grass and serve hot with chili sauce.