Ib tug txhuam hniav yog ib yam khoom siv tu, txhuam-hom txhuam, siv los ntxiv cov tshuaj txhuam hniav rau cov txhuam hniav, thiab tom qab ntawd rov txhuam ntau qhov chaw ntawm cov hniav kom huv si ntawm qhov ncauj.
Raws li cov ntaub ntawv, lub ntiaj teb thawj niaj hnub txhuam hniav tau tsim nyob rau hauv 1498 los ntawm Zhu Youxi, Emperor Xiaozong ntawm Ming Dynasty. Cov txhuam hniav tsim los ntawm Emperor Xiaozong ntawm Ming Dynasty siv cov npua npua teb ua cov txhuam hniav txhuam thiab cov pob txha tsiaj ua cov txhuam hniav, tsim cov txhuam hniav yooj yim.