The Chinese fighter, who came second to France’s Estelle Mossely in the lightweight division at last year’s Olympic Games, triumphed 5-0 at the Nguyen Du Indoor Stadium.

Awaiting her in the penultimate round is Chinese Taipei’s Huang Hsiao-Wen, who beat Sri Lanka’s Kasthuri Arachchige Keshani Hansika by the same scoreline.

The other semi-final pits world silver medallist Sonia Lather of India against Uzbekistan’s Yodgoroy Mirzaeva after both came through their bouts today.

Lather beat Kazakhstan’s Nazym Ichshanova 3-2, while Mirzaeva defeated South Korea’s Ko Hyun Young 5-0.

It was not only Yin who secured a win for China today with light welterweight Dou Dan stopping Sri Lanka’s P Galbokka Hewage Thanuja Nilakshi in the third round of their contest and welterweight Gu Hong beating Uzbekistan’s Gavkhar Mirzaeva 5-0.

India also had considerable success with light welterweight Laishram Sarita Devi and welterweight Lovlina Borgohain joining Lather in reaching the semi-finals.

Sarita Devi defeated Uzbekistan’s Maftunakhon Melieva 5-0 before Borgohain won by the same margin against Mongolia’s Erdenetuya Enkhbaatar.

There was disappointment for fellow Indian Neeraj, however, as she lost 5-0 to North Korea’s Pang Chol Mi in the flyweight quarter-finals.

Action in Ho Chi Minh City is due to continue on Tuesday (November 7) when the semi-finals across all 10 weight categories are set to be held.