▁during ▁the ▁reign ▁of ▁Emperor ▁M uz ong ' s ▁brother ▁Emperor ▁X u ā n z ong , ▁T ian ▁Bu ' s ▁son ▁T ian ▁H ui ▁( 田 <0xE9> <0x90> <0xAC> ), ▁then ▁serving ▁as ▁a ▁pre fect ural ▁pre fect , ▁was ▁accused ▁of ▁cor ruption ▁and ▁sent enced ▁to ▁death , ▁but ▁the ▁ch an cell or ▁C ui ▁X uan ▁pointed ▁out ▁T ian ▁Bu ' s ▁death ▁for ▁the ▁state ▁and ▁begg ed ▁for ▁forg iveness ▁for ▁T ian ▁H ui , ▁and ▁so ▁T ian ▁H ui ▁was ▁only ▁dem oted . ▁ ▁Notes ▁and ▁references ▁▁▁ ▁Old ▁Book ▁of ▁Tang , ▁vol . ▁ 1 4 1 . ▁ ▁New ▁Book ▁of ▁Tang , ▁vol . ▁ 1 4 8 . ▁ ▁Z iz hi ▁T ong j ian , ▁vol s . ▁ 2 3 9 , ▁ 2 4 0 , ▁ 2 4 1 , ▁ 2 4 2 . ▁ ▁Category : 7 8 5 ▁birth s ▁Category : 8 2 2 ▁death s ▁Category : T ang ▁dynast y ▁j ied ush i ▁of ▁Hey ang ▁Circ uit ▁Category : T ang ▁dynast y ▁j ied ush i ▁of ▁J ing y uan ▁Circ uit ▁Category : T ang ▁dynast y ▁j ied ush i ▁of ▁We ib o ▁Circ uit ▁Category : Su ic ides ▁by ▁sharp ▁instrument ▁in ▁China ▁Category : Ch inese ▁military ▁personnel ▁who ▁committed ▁suic ide ▁Category : T ang ▁dynast y ▁polit icians