The only Chinese person working on the Manhattan Project was “First Lady of Physics” nuclear physicist Wu Jianxiong, whose experiments disproved the law of conservation of parity. She was the first living scientist to have an asteroid named after her. Also, her husband was Yuan Shikai‘s grandson.
While bored during his work with the Manhattan Project Richard Feynman would amuse himself by picking the locks of his colleagues confidential file cabinets and placing prank notes, his colleagues believed a spy had infiltrated the project.
Chadwick (the discoverer of the neutron) was a student of Rutherford (discoverer of the proton) who was the student of Thomson (the discoverer of the electron).