The rhymes of Shu Xiang are Sen, Yin, Xin, and Jin, which belong to the Pingshui rhyme of "Xiaping Twelve Invasions".
If you want to check the rhyme of a certain poem, you can do this:
1. Find the rhyme of the poem.
2. Go to this webpage ("Tang Poems and Song Ci" Tibetan Scripture Pavilion)
/cjg4.htm
3. Use the search (Ctrl F) command to find Find the rhyme part to which the rhyme foot belongs.