Is the rising pronunciation in the poem "Autumn Pool Rains at Night" four or three?

three lives—present life

Write to my wife in the north on a rainy night.

Tang Dynasty: Li Shangyin

When you ask about the return date, it's hard to say, evening rain, Manqiuchi. ?

When * * * cut the candle at the west window, but talk about the rain at night.

Translation:

When you ask about the date of return, it's hard to say clearly. It rained cats and dogs all night in Bashan, and the autumn pool was full.

When to go home, * * * cut the candle flowers in the west window and tell them face to face what it's like to rain late.