Literature Reference: After parting at the short pavilion, leaning on the railing, thoughts turn to solitude. Rain and snow fall in the last month of winter, wheels and hooves tread the distant path. Human relationships are hard to maintain, the color of grass easily withers. Shared are the affairs of men, when will we enter the imperial capital? Source from 'Leisure at the End of Winter, Sent to a Friend' by Zhu Qingyu.