<prompt> Pedzisa mutsara unotevera: Muna Nyamavhuvhu 2018, Sun akakwikwidza mumakwikwi ese akasununguka kubva pa200 kusvika pa1500 metres freestyle ku  <response>: Mitambo yeAsia. Akakwikwidzawo mumakwikwi e4 × 100 uye 4 × 200 metres freestyle relay. Mumakwikwi emamita mazana maviri akasununguka, Sun akahwina goridhe nenguva ye1:45.43. Akapedza 1st mumamita mazana mana akasununguka aine nguva ye3:42.92, anopfuura masekondi mana pamberi pemumhanyi Naito Ehara. Nokukunda nguva yaHorton ya3:43.76 kubva ku2018 Commonwealth Games, Zuva rakava nhamba yekutanga kushambira munyika yechiitiko ichocho che2018. Mumakwikwi evarume emamita mazana masere akasununguka, ayo akaunzwa kumitambo yeAsia kekutanga, akahwina goridhe nenguva ya7: 48.36. Mumakwikwi emamita 1500 akasununguka, akapedza ari 1st nenguva ye 14:58.53, achirova mutambi wechipiri Nguyễn Huy Hoàng nemasekondi matatu. Yaiva nguva yokutanga Sun akahwina mutambo mukati memaminitsi gumi nemashanu kubva ku2014 Asian Games, uye yake yechitatu yakateedzana yeAsia Games zita mumamita 1500 freestyle. Achimiririra China, Sun akabatsira chikwata chake kupedza chechipiri mu4 × 100 metres freestyle relay nenguva yakazara ye3:13:29, kumashure kwenguva yeJapan ye3:12.68. Mu 4 × 200 metres freestyle relay, akabatsira China kuhwina sirivheri nenguva yakazara ye7:05.45, kumashure kweJapan 7:05.17. 