1, after opening the bottle cap, there is a ring in the part on the bottle mouth, so you can hook it into the ring with your middle finger and pull it up.

2. If you really can't open it, you can use a knife to cut the opening on the top of the bottle. This is the same as the method of opening salad oil and mature vinegar. The soy sauce bottle can be opened by twisting it directly. Pull the mouth inside.