While in Spain, he joined youth academy Neurofutbol, where he scored 20 goals in 24 games at under-16 level.[1] He was promoted to the under-19 team, before a move to professional side Langreo in August 2021.[1] Initially assigned to the under-19 squad, where he made his debut in September 2021,[4] he went on to represent the club's 'B' team in the Tercera División RFEF.[5]
^ abcd"新疆足球小伙加盟进西班牙足球俱乐部" [Xinjiang football boy joins Spanish football club]. new.qq.com (in Chinese). 20 August 2021. Retrieved 29 January 2023.
^ ab"加泰罗尼亚"闯"进个昌吉足球小子" [Catalonia "broke" into a Changji football boy]. toutiao.com (in Chinese). 17 August 2021. Retrieved 29 January 2023.
^ ab"留洋确诊小将疑遭谩骂!哥哥回击:他才17岁!回国后主动申报症状" [The teenager who was diagnosed abroad was suspected of being abused! Brother hit back: He is only 17 years old! Voluntarily declare symptoms after returning home]. sohu.com (in Chinese). 18 March 2020. Retrieved 29 January 2023.
^"留洋小将史乐天在西班牙U19全国联赛中迎首秀" [Shi Letian, a teenager studying abroad, made his debut in the Spanish U19 National League]. sports.sina.cn (in Chinese). 20 September 2021. Retrieved 29 January 2023.
^"史乐天哥哥为其发声:弟弟到达机场主动申报不适 有些喷子没脑子" [Shi Letian's brother speaks out for him: My brother took the initiative to declare discomfort when he arrived at the airport.]. ppsport.com (in Chinese). 18 March 2020. Retrieved 29 January 2023.
^"留洋小将史乐天讲述康复经历:从停机坪直接上救护车,昨日已为抗疫捐款" [Shi Letian, a teenager who studied abroad, talked about his recovery experience: he went directly to the ambulance from the tarmac and donated money for the fight against the epidemic yesterday]. jinqiulive.com (in Chinese). 28 April 2020. Retrieved 29 January 2023.