Bees brew a hundred flowers of honey just to make the whole world sweet.

It means like a bee, asking for nothing in return. "Bees make a hundred flowers of honey, only wish it is sweet all over the world" reminds people that bees want nothing from people, but give people excellent spirit, that is, diligence, selflessness and selfless dedication. The phrase "Bees brew a hundred flowers of honey, only wish the world is sweet" comes from the lyrics of the opera Jiang Jie.