Это конструкция: кто 对 что 感兴趣, т.е. 我对风水感兴趣
Certain verbs, especially psychological verbs, are often used with 对, which means 对 is needed if you want to add an object into the structure. I good example is 对……感兴趣 ("to be interested in..."). In this case, 对 means "in," "on," "about," etc., and the object doesn't have to be a person. The short list below will give a few more verbs frequently paired with 对.
Structures
对⋯⋯感兴趣 (gǎn xìngqù) to be interested in...
对⋯⋯负责 (fùzé) to be responsible for...
对⋯⋯满意 (mǎnyì) to feel satisfied with...
对⋯⋯失望 (shīwàng) to be disappointed in/with...
对⋯⋯好奇 (hàoqí) to be curious about...
Certain verbs, especially psychological verbs, are often used with 对, which means 对 is needed if you want to add an object into the structure. I good example is 对……感兴趣 ("to be interested in..."). In this case, 对 means "in," "on," "about," etc., and the object doesn't have to be a person. The short list below will give a few more verbs frequently paired with 对.
Structures
对⋯⋯感兴趣 (gǎn xìngqù) to be interested in...
对⋯⋯负责 (fùzé) to be responsible for...
对⋯⋯满意 (mǎnyì) to feel satisfied with...
对⋯⋯失望 (shīwàng) to be disappointed in/with...
对⋯⋯好奇 (hàoqí) to be curious about...