庞涓
Pang Juan was a fellow student of Sun Bin and both of them studied military strategy together under the tutelage of the hermit Guiguzi. They developed a close friendship and became sworn brothers, while studying in seclusion with their teacher in mountainous regions. Pang left and ventured to the Wei state when he heard that King Hui of Wei was recruiting men of talent to serve him. Pang impressed the king with his proposals on policies to strengthen the Wei state and boldly asserted that he had the ability to help Wei conquer the other six major rival states. The king appointed Pang Juan as a military general and put him in charge of Wei's military forces. Pang led the Wei armies to victories in battles against smaller states such as Song, Lu and Zheng and became a highly respected figure in Wei.