Here's what rhymes with tiancai.
guy chi quae kai by my high why die lie thy y buy cry sky tie vi hi shy sigh bi bye dye fi hy nigh pi pie thai thigh vie dei ly psi rye ty wir awry hai lye mai muy nai wry cy fy lai luy mei sy tai thei wai phi dry try fly spy fry ply sly pry tri trie pri untie sty aquae bonsai amebae stye shanghai banzais slier apply deny imply nearby rely nuclei alkali defy goodbye underlie alibi samurai belie decry termini amoebae ramify deify ossify spry turfy lanai scurfy mummify beatify drachmai supply reply thereby occupy whereby comply hereby modify certify notify amplify magnify nullify pacify ratify standby unify lullaby pupae terrify typify codify descry dignify edify mollify overlie personify retry triply blowfly horrify reunify barfly ripply speechify overbuy dandify yuppify justify satisfy clarify qualify specify classify signify testify verify butterfly glorify gratify purify quantify diversify fortify rectify beautify falsify crucify liquefy mortify resupply vilify dragonfly firefly mystify preoccupy stratify ultrahigh vivify calcify misapply petrify stupefy liquify overfly scarify versify prettify identify stimuli multiply simplify alveoli indemnify acidify demystify detoxify stultify emulsify reclassify cumuli dissatisfy declassify hyperbolae vitrify gentrify intensify disqualify solidify objectify oversupply electrify revivify refortify syllabify solemnify exemplify transmogrify oversimplify misidentify