How to open the bottle cap of Lu Hua peanut oil 1L?

Unscrew the red cap and take it off, then hook the pull ring with your fingers and pull it out hard to pour out the oil.

If you really need to take a part of the whole cover, you can pry it slowly from the bottom of the whole white cover with a knife until the whole cover is separated with a knife.

But the whole cover can't be removed, because the oil drum was installed when it was manufactured by expanding with heat and contracting with cold. Any bio-oil has a pull on the top of the bottle cap.