
The second-seeded Zii Jia got off to a great start at the Istora Senayan in Jakarta when he won the first game before losing a closely-fought second to allow the unseeded Hong Kong shuttler a way back.
A series of unforced errors left Zii Jia with too much to do as Ng romped home to seal his place in the last eight.
Ng will take on Kanta Tsuneyama in the quarterfinals after the Japanese dumped Denmark’s Anders Antonsen, 21-16, 21-10 in another second round match today.
This is Zii Jia’s third straight early round exit in three tournaments this year, having also suffered a similar fate in the Malaysia Open and India Open.
World No 4 Zii Jia went down to Japanese rising star Kodai Naraoka in the opening round of the Malaysia Open earlier this year and then to China’s Li Shi Feng in the second round of the India Open last week.
Meanwhile, Malaysian professional pair and second seeds Tan Kian Meng and Lai Pei Jing also endured a nightmarish outing when they were stunned 15-21, 21-7, 14-21 by Indonesians Jafar Hidayutullah and Aisyah Salsabila Putri Pranata in the second round of the mixed doubles.
The unseeded Indonesians will take on Feng Yan Zhe and Huang Dong Ping in the quarterfinals after the Chinese pair eliminated Indonesians Rinov Rivaldy and Pitha Haningtyas Mentari 21-16, 21-8 in another second round match.