zhǐ / yǒu / qīn / zì / shí / jiàn / cái / néng / zhēn / zhèng / lǐ / jiě / zhè / mén / jì / yì / de / zhēn / suǐ

只有亲自实践，才能真正理解这门技艺的真髓。

Only through hands-on practice can one truly understand the essence of this craft.