There is no such poem, this line is extracted from other poems:
This line is from the first line of "Traces of the Moon and Flowers" by Wei Zian, a poet of the Qing Dynasty. "Sentimentalism has been an empty hatred since ancient times, and good dreams are the easiest to wake up from".
And "This hatred has no end" comes from: the last line of "Song of Long Hate" by Tang Dynasty poet Bai Juyi. This hatred has no expiration date.
Expanded:
In the Hong Kong TV series Journey to the West, the catchphrase of Porky Pig, who was sentenced to the earth to fetch scriptures from the Western Heaven for violating Chang'e, was, "Much love since ancient times is empty of hate, and this hate has no expiration date." . Here the old pig made a mistake, the first line is from "Sentiment since the beginning of time is empty of hate, good dreams are the easiest to wake up." The next line is from "The Song of Eternal Hatred", which reads, "The sky is long and the earth is long, but this hatred has no expiration date." The next line is from "The Song of Long Hate". Maybe the old pig remembered it wrong, or maybe he's even more clever than we thought, and already knew the set lines, or maybe not.
Reference:Baidu Encyclopedia - The Song of Eternal Hatred "This Hate Has No End"
Reference: Reference.