Sindhu, the Olympic silver medallist, couldn't match the pace, power and precision of her younger world number 11 rival Chochowong and lost 17-21 9-21
In a quarter-final match, Sindhu beat Akane 16-21, 21-16, 21-19 in one hour and 16 minutes in the Super 1000 tournament.
Sen lose to Mark Caljouw of the Netherlands 17-21, 21-16, 17-21 in the match, which lasted 55 minutes
Ashwini and Sikki lost the match 22-24, 12-21 in 39 minutes, thus leaving Lakshya Sen and reigning world champion PV Sindhu as the only Indians remaining in the Super 1000 tournament.
Lakshya will next face Netherland's world no 36 Mark Caljouw. Sindhu will take on Japan's third seed Akane Yamaguchi.
However, Lakshya overcame world number 18 in the second set quite easily to clinch the game in 49 minutes and sail into the second round.
The Badminton World Federation (BWF) and Badminton England on Thursday said that the entire Indonesian team will have to self-isolate from the date of their inbound flight after a person travelling onboard tested positive for coronavirus.
However, ace Indian shuttler Saina Nehwal exited the event after retiring hurt in the first round match (21-8, 10-4) against Danish badminton player Mia Blichfeldt.
Fifth seed Sindhu will kick off her campaign with a clash against Malaysia's Soniia Cheah and is likely to face Japan's Akane Yamaguchi in the quarterfinals, provided she wins her initial rounds
Sindhu, who had won the coveted World Championship gold medal here in 2019, couldn't match the speed and accuracy of Marin during her 12-21 5-21 defeat in the final
Sindhu had lost her last two matches against Marin and has beaten the Spaniard just once in the last four matches. However, it has been more than two years since the pair faced each other
Sindhu will now face Spanish Olympic champion Carolina Marin in the final.
Sindhushowed her class in the second game and did not give any margin for error for her opponent to dominate the match
The pair defeated Malaysia's Ong Yew Sin and Teo Ee Yi 12-21, 21-19, 21-12 to progress ahead in the tournament.