There is no defence to the rook’s transfer to the b-file. White resigned.

The black minor pieces are hanging, but White’s queen prevents him from taking them. At first glance, the queen has no good retreat squares. If it goes to g3, his own rook is pinned, whilst after 23.Qf2, Black has 23...Bh3!, and on 23.Qg2 Qe3+, there is the same idea of ...Bg4-h3.
It did not occur to the Chinese player to retreat the queen away from all attacks by means of 23.Qh1!!, which immediately wins a piece.
In the game, after...

White retained the advantage, although he eventually lost.

For the piece, White has three pawns and a serious initiative, so the advantage is on her side. But it is another matter how to develop this initiative. The black king is vulnerable, and her pieces are poorly placed, with the exception of the queen and the Nf5, which cover entry squares in her camp. The white Rh3 does not yet take part in the attack and her king on f1 is also badly placed, being better on a dark square nearer the corner. There is no forcing way to win. Thus, we use the method of exclusion, looking for a way to improve the worst placed piece. The most energetic, strong and tempo-gaining move is:

Having seen this, it is impossible not to play it.
If one asks what other candidate moves deserve consideration in so sharp a position, then in the first instance, there is 34.Rf3, creating the threat of 35.Rxf5. But then, one has to see 34...Qd1 35.Ra3!.
In the game, there followed 34.a4, which is clearly bad – White prepares to drive the knight from b6, where it is so badly placed. At the same time, there is still a long way to go to create a passed pawn. After 34...Qd1, the game continued in a complicated endgame, but without any advantage for White.
After the text, the pawn can only be defended by...

but here the queen is under an X-ray from the white rook. If Black does not defend the pawn, but puts it under attack with 34...a6, the most direct and forcing win is as follows: 35.bxa6 Qxc6 36.Rxf5 Kg8 37.Rc5 – the pawn gets to a7, whilst all the pieces are attacking.

The white pawns easily promote.