庞涓
Here's the translation of "The General Who Feared His Own Friend" into English: **The General Who Feared His Own Friend**
He studied alongside the greatest strategist of the age — and spent his life destroying the kingdom that employed them both out of fear of that friend's talent.
Pang Juan studied military arts alongside Sun Bin, the greatest strategic mind of the age. He went to serve Wei first and became its supreme general. When he heard Sun Bin had gone to Qi, he feared his old friend's talent. He lured Sun Bin to Wei and had his kneecaps removed, crippling him permanently. Sun Bin later became a wandering strategist in Qi. At Maling, Pang Juan led the Wei army into a trap set by Sun Bin's stratagems. Trapped, exhausted, and surrounded, Pang Juan died by his own sword rather than face capture. His jealousy destroyed the one friendship that might have saved him — and killed him in the end.