yé / ye / zài / zhè / jiàn / shì / shàng / tè / bié / sǐ / wán / gù / bù / kěn / gǎi / biàn / zhǔ / yi

爷爷在这件事上特别死顽固，不肯改变主意。

Grandpa is especially stubborn about this and refuses to change his mind.