This General, Chen Jin, was in his fifties. When he was younger, he had achieved many great accomplishments and now wherever he went, he would be respectfully addressed as 'General'.
Chen Qianqian was his only daughter. As the daughter of the General, her position was enviable.
An'an had heard that this General was righteous, upright and capable. But as he only had one daughter in the latter years of his life, she was the apple of his eye and he was more indulgent towards Chen Qianqian and thus, more lax in discipling her.
Lu Yan's father's record was removed by someone. This person thought that by removing the record, nothing could be investigated, which was ludicrous.
If anything, that person had left behind a very glaring suspicion. Why did he remove the record? What was his intention? There were many grounds for suspicion.
An'an wanted to find the old General. She wanted him to overturn the case.