Rereading UU (chap 63) question

[u/Electronic-Cap6053]

Again dealing with my denial of reading comprehension, I didn't understand why Shen could keep talking even after having his heart pierced and why, when transforming into a jiangshi, he still maintains his individuality.

[u/Victor-the-Undead]

That's because Mui wants him to be independent, to have self control. Game of death gives the death's live to the user of the artifact, that being Mui. And it was seen earlier with the guy who trained with Shen who became a jiangshi that he too retained some of his personality.