The teenager, who went down to the Malaysian 21-16 21-16 in the Yonex Sunrise Malaysia GPG last month, had a roller-coaster ride throughout but stepped up a notch when it mattered most to wrap up the match after 72 minutes of battle.
He will take on either second seed Houwei Tian or Xin Wu of China today. Sixth-seeded Suppanyu Avihingsanon was upset by Ka Long Ng of Hong Kong 21-11 21-11 and Khosit Phetpradab lost to fourth-seeded Zi Liang Derek Wong of Singapore 18-21 21-19 21-17.