Silkworms will weave until they die in spring, and candles will drain the wick every night. What kind of emotion is this?

:。 The word "silk" in "Spring silkworms must weave until they die" is homophonic with "thinking". You miss each other like silkworms until you die. "And the candle will cry the wick every night" is a metaphor for the endless pain of not being together, as if the candle burned to ashes and the wax tears ran out. Miss more than, showing deep attachment, but will spend a lifetime in miss, but it also shows that meeting is indefinite and the future is hopeless. Therefore, his own pain will accompany him all his life. However, although the future is hopeless, she loves it to death and will be attached to it all her life; Despite the pain, there is only patience.