When it comes to the Sikh Temple, it is impossible not to mention Sikhism. The name Sikhism may be unfamiliar to many Hong Kong residents; in fact, it is one of the youngest religions, originating from the Punjab region of India, just like Hinduism. They refer to some of the spiritual leaders in the faith as Gurus, with Guru Nanak being the founder of Sikhism.

Guru Nanak grew up under Indian culture, and at the age of 30, he began to be puzzled by the prevalent caste system and untouchability in society. In response, he founded Sikhism. He believed that a new religion was needed—one that championed equality—to address the culture of discrimination in India. Thus, the core of Sikhism is the rejection of the authority of the Vedas, the elimination of caste distinctions, and the emphasis on equality for all, particularly in advocating for women's rights.

To promote the core belief in equality, Guru Nanak established Guru Ka Langar, which means a community kitchen that provides food for everyone. The reason he started with food is that it is an unavoidable part of daily life, thus allowing him to connect with everyone. In Guru Ka Langar, all participants must set aside their distinctions; it does not matter which caste provided the food, nor can anyone disdain the food prepared by people of a particular caste. Everyone sits together and shares meals equally.