"Many American professionals and experts in this field, including Shectman, have offered their help to us, such as Roger Angel, Jeff Kingsley, David Schlegel, Sandra Faber and Robert Lupton. They are highly respected and very kind."

Talking about Shectman, Cai described him as a gentleman who has greatly showed the spirit of an educator who loves to share what he knows with younger generations.

During his visit, the 75-year-old spent long hours at the office from morning to evening, sacrificing his lunch breaks to engage with Chinese faculty and students.

Cai, who met with Shectman every day during his stay, said that Shectman has played a quiet but influential role that has encouraged everyone on the team.

Cai compared the collaboration between Chinese and US scientists to the spirit of Norman Bethune and the Flying Tigers.

"We have one universe, and basic science research benefits all mankind. This is what I learned from many American professors. They are capable and have high moral character. Through collaboration with them, we will push the MUST project further. If this project succeeds, China, the US and the world will greatly benefit in exploration of the universe," he added.

Yang Zishuo contributed to this story.