Tsung-Dao Lee is a distinguished Chinese-American physicist, who jointly received the ‘Nobel Prize in Physics’ in 1957 with another physicist Chen-Ning Franklin Yang for their significant work on the violations of the principle of parity conservation. The duo established theoretically that conservation of parity, one of the fundamental laws of quantum-mechanics is violated in the nuclear procedure that result in emitting alpha or beta particles, that is to say in weak nuclear reagents. This discovery led to significant alterations and refinements in the field of particle physics. They concluded that tau-meson and theta-meson, which were earlier comprehended to be different particles due to their decaying by modes of differing parity, are actually same (presently called K-meson). Their theory was experimentally validated by fellow physicist Chien-Shiung Wu in 1957. Apart from parity violation, Lee is also known for his work in non-topological solitons and soliton stars, relativistic heavy ion (RHIC) physics and the Lee Model. At present he is the University Professor Emeritus at ‘Columbia University’ where he taught for almost six decades. While he and Yang became first Chinese Nobel Laureates, he was youngest Nobel laureate since Second World War till 2014 when Malala Yousafzai received ‘Nobel Peace Prize’. After becoming a naturalized American citizen in 1962, he remains the youngest American ever to receive a ‘Nobel Prize’.