This sentence comes from the chapter of "The History of the Three Kingdoms" in which Kongming borrows the east wind. On the surface, it means that he has been pitied by Dongfeng, which means that if he gets help from others, he will certainly live up to his time and those who help him.

Extended data:

1. Dongfeng was borrowed by Zhuge Liang when Chibi was on fire. It is a metaphor of God's help, and spring refers to precious time. So the whole sentence means that if God can help me, I will not live up to this precious time and your expectations.

2. Later it was used to describe the love between men and women. If I can get the attention of a beautiful woman, I will definitely love you and cherish the happy time with you.

Literally, this sentence means that whenever I get the attention of Dongfeng, I will never fail this beautiful spring and you. The implication behind it is that when I am prosperous, I will never fail you.

References:

Baidu Encyclopedia-Kongming