What did Nehru establish even 'before India's independence' to promote unity among Asian nations?

Asian Relations Conference

However, considering its dimensions, geographical location, and inherent power capabilities, Nehru envisioned a significant role for India not only on the global stage but particularly within Asian affairs. His era witnessed the initiation of interactions between India and other recently liberated nations across Asia and Africa. Spanning the 1940s and 1950s, Nehru passionately championed the cause of Asian unity. Under his guidance, India orchestrated the Asian Relations Conference in March 1947, a remarkable feat accomplished five months prior to its own attainment of independence.

The Bandung Conference (Asian-African Conference)  was held in Bandung, Indonesia in 1955.
The first NAM summit was held in September 1961 in Belgrade, Yugoslavia.