Conversation so far:
When did Shen Kuo die?
Shen Kuo died in 1095.
What was Shen Kuo impeached for?
Despite Shen successfully defending fortifications and the only possible Tangut invasion-route to Yanzhou, Chancellor Cai Qu held Shen responsible for the disaster and loss of life of 60,000.
Any interesting information about Shen Kuo's impeachment?
As he was isolated from governance, he decided to pick up the ink brush and dedicate himself to intensive scholarly studies.
What was important about Shen Kuo?
Shen discovered the concept of true north in terms of magnetic declination towards the north pole, with experimentation of suspended magnetic needles.
What was Shen Kuo passionate about?
In his more idle years removed from court affairs, Shen Kuo enjoyed pastimes of the Chinese gentry and literati that would indicate his intellectual level and cultural taste to others.

Question: When did he die?
Self-contained rewrite: When did Shen Kuo die?