Sai Praneeth, who sent legendary Taufik Hidayat into retirement last week, won both his men’s singles qualification matches.
The youngster beat Japanese Riichi Takeshita 21-12, 22-20 in 36 minutes after overcoming Malaysian Muhammad Hafiz Hashim 21-13, 21-15 in 26 minutes.
Arundhati and Thulasi also entered the women’s singles main draw.
Arundhati first thrashed Russian Anna Astrakhantseva 21-5, 21-10 in 17 minutes before beating local girl Xiaoyu Liang 21-14, 21-16 in half an hour.
Meanwhile, Thulasi beat Vietnamese Thi Trang Vu 21-18, 21-17 in 38 minutes in the first round and Thai Chochuwong Pornpawee 18-21, 21-13, 21-8 in 51 minutes.