Tā duì huángdàodài shàng de xīngzuò hěn gǎn xìngqù.
He's very interested in the constellations of the zodiac.
Tips
usage
The Western-style zodiac (Aries, Taurus, etc.). Don't confuse with the Chinese zodiac 生肖 (shēngxiào), which is the twelve-animal cycle tied to birth years.