In principle, it is in Xinjiang, but how to translate the South China Sea? What do you mean by three "Yu"? Invite sb. to rescue.

It was spread by Cantonese, local languages and the south. It's been a long time, and I can't remember the original text. I can only talk about my own understanding for your reference.

Go to this place and turn it into a territory until the South China Sea (also a territory).

The first one means "go, go", which is used with the verb "Xinjiang" to indicate the direction of action.

The second one means "in", the third one means "to", or two or three can be used as "to".