Rubuta ci gaba don wannan sakin layi - Sun Jiajun (an haife shi a ranar 1 ga Agusta 2000) dan wasan ruwa ne dan kasar Sin. Ya lashe lambar zinare a wasan tsere na maza na mita 100 da tseren mita 4 × 100 a wasannin Olympics na matasa na shekarar 2018 da aka gudanar a Buenos Aires, Argentina. Ya kuma lashe lambar azurfa a cikin maza na mita 50 da kuma nau'ikan relay na mita 4 × 100 a cikin wannan taron. A shekarar 2021, ya cancanci wakiltar kasar Sin a gasar tseren mita 4 × 100 na maza
a wasannin Olympics na bazara na 2020 da aka gudanar a Tokyo, Japan.