天雨順延

weather permitting (idiom)

day / sky / heaven

rain / CL:陣|阵[zhen4],場|场[chang2]

(literary) to rain / (of rain, snow etc) to fall / to precipitate / to wet

to obey / to follow / to arrange / to make reasonable / along / favorable

to postpone / to procrastinate

surname Yan

to prolong / to extend / to delay