Seeking the original poem "Homesickness"

Nostalgia is a sad song. It touched the softest part of my heart on a cold moonlit night, but I couldn't stop it. Nostalgia is a cup of bitter tea. You can taste more sweetness without taking a sip. Homesickness is a hot red leaf. I don't know when it will end, or should I continue to wander. It seems hard to say what it is. Only by personal experience can we know the endless lovesickness.