Park So-youn, who skated at the 2014 Sochi Winter Olympics, finished third in the qualification with 488.30 points.

Choi earned 64.11 points in Saturday's clean short program and added 126.01 points from Sunday's free skate.

Choi ranked second at the Korea Figure Skating Championships behind You Young, who earned 135.15 points in free skate for 204.68 points overall. You, at 13, isn't yet old enough to compete at the Olympics.

Choi, the 2017 Asian Winter Games champion, didn't make any glaring mistakes Sunday. She opened her program, set to the soundtrack of the film "Doctor Zhivago," with a clean triple lutz-triple toe loop combination. She also pulled off a successful triple lutz-double toe loop-double loop combination.

Choi went on to land a clean triple salchow and a double axel, and finished off her program with flawless spins. 

The rising star finished in 10th place at last year's world championships to earn two Olympic tickets for South Korea and ended up winning one of them herself.

The 2017-2018 season has been a struggle for Choi on and off the ice.

Her mother passed away in June, and the grief-stricken Choi even contemplated skipping the Olympic trials. But she battled on and dedicated her performance on Sunday to her late mother.

"Looking back on recent months, I've gone through so much," she said. "I am glad I've been able to overcome them. My mom is on my mind right now. If she were still here, she would have been more excited and thrilled than anyone else."

On the ice, Choi has been dealing with foot pains, caused by a loose pair of boots. She entered this weekend's combination with two different boots and said she'd keep them on for the Olympics.

Her left boot is from two years ago, and the right boot was used last year.

With the Olympics about a month away, Choi said her focus will be more on maintaining her form than on working on techniques.

She opened this season with new music for free skate, titled "Gypsy Melodies," but recently switched back to the "Doctor Zhivago" soundtrack, which she'd used last season.

"I went with the new song because it was the last piece of music my mom told me about," Choi said. "But I never got familiar with it, and I went back to the old program. I did make some changes to my costume and accessories." (Yonhap)