Yu/Jin competed at the 2012 World Junior Championships and won the silver medal behind teammates and training partners Sui Wenjing/Han Cong.

Prior to the 2013-14 season, Yu/Jin changed coaches, moving from Luan Bo to Olympic pairs champion Zhao Hongbo, Yao Bin, and Han Bing.

At the Grand Prix Final, they set new personal bests in the short program and free skate to finish in 5th place.

Despite training senior program layouts for much of the season, they successfully defended their Junior World title, winning both segments of the competition.

[3] On April 14, 2016, International Figure Skating magazine broke the news of Peng's new partnership with Jin Yang.

Peng/Jin competed in the pairs event in Pyeongchang, finishing seventeenth in the short program and thus missing the free skate by a single ordinal.

With both Sui Wenjing / Han Cong and Yu/Zhang sidelined by injury at the beginning of the season, Peng/Jin were the only Chinese pair team competing internationally on the senior level.

On the Grand Prix, Peng/Jin began at the 2018 Skate Canada International, where they won the silver medal, finishing ahead of the bronze medalists Kirsten Moore-Towers / Michael Marinaro by 0.15 points.

At the 2019 Four Continents Championships in Anaheim, they placed third in the short program behind Moore-Towers/Marinaro and a returning Sui/Han, in consequence of Peng falling on their throw jump.

[9] They also came third in the free skate, making an error on the side-by-side triple Salchow jumps, finishing third overall, their first ISU Championship medal.

[11] They came fifth in the free skate due to Peng underrotating her triple Salchow attempt and finished fourth overall, off the podium, by 1.97 points.

On the Grand Prix series, Peng/Jin first competed at 2019 Skate America, placing first in the short program despite Peng stepping out on and underrotating her side-by-side jump.

[13] They also placed first in the free skate, despite a fall on a throw triple loop, taking their first Grand Prix gold medal together.

[14] At their second event, the 2019 Cup of China, Peng/Jin placed narrowly third in the short program after Peng fell on a jump and they had unison issues with their spins.

[22] In March at the 2021 World Championships in Stockholm, Peng fell at the beginning of the short program, breaking one of the zippers on her dress, but continued the performance and put her hand down on her underrotated jump attempt.

[26] The Chinese federation opted to withdraw them from their second event, the 2021 Internationaux de France, as a result of which they could not qualify for the Grand Prix Final.

They were third in the segment despite Peng's multiple jump errors and their final lift exiting early, while the Chinese team finished in fifth place.

[29] In the free skate, Peng underrotated and stepped out of her triple Salchow attempt, but they placed sixth in the segment and remained fifth overall.

Jin said they had been under "great pressure because we had the disappointing score" at the previous Olympics and failed to qualify for the free skate but that they were pleased to have performed well in Beijing.

Officials from the State General Administration of Sports held a press conference where they attributed the discrepancies to erroneous information provided by the Chinese website.