[5] Zhu made his debut for the Chinese national team on 7 June 2019 in a 2–0 win against the Philippines, coming on as a substitute for Ji Xiang in the 33rd minute.

[6] On 24 March 2022, Zhu scored his first international goal in a 1–1 draw against Saudi Arabia in the 2022 FIFA World Cup qualification, converting in a second-half penalty.

He then became the first Chinese player born in the 21st century to debut, provide an assist and score a goal for the national team.

[7] On 20 July 2022, Zhu captained the national team for the first time against South Korea in the 2022 EAFF E-1 Football Championship, however he inadvertently headed in an own goal in the first half of an eventual 3–0 defeat.

[8] Zhu was named in China's squad for the 2023 AFC Asian Cup in Qatar and started the team's opening match against Tajikistan on 13 January 2024.