Question: What is the meaning of that painting?

Sri Chinmoy: It represents the Divine Mother. We conceive her with four aspects. This one represents power. According to Indian philosophy she offers Infinite Power to her devotees. At the same time she has great compassion for all our sufferings. Her name is Kali.

From:Sri Chinmoy,Earth’s Cry Meets Heaven’s Smile, part 3, Aum Press, Puerto Rico, 1978
Sourced from https://srichinmoylibrary.com/ech_3