Phan Khôi short time. However, he also was very interested in researching the roots of Vietnamese heritage, especially Vietnamese spoken language, which had long been ignored and looked down upon by the elite class in Vietnam. His research Phan Khôi: Việt ngữ nghiên cứu was a well of knowledge for young Vietnamese to follow. One generation before Hoàng Văn Chí, one generation after Phan Chu Trinh, Phan Khôi represented a class of Vietnamese intellectuals caught between colonialism, nationalism, communism. Phan Khôi's progressive spirit and his lifelong effort to raise the Vietnamese people's awareness of human rights, civil rights, and good education were
Pang Xi Zhang owed him a huge favour for saving his brothers' families in Chang'an and also because he thought that Liu Zhang deeply trusted him. It turned out that Liu Zhang gradually distrusted Pang Xi and began to alienate him. Around 211, when Liu Zhang's adviser Zhang Song urged his lord to invite another warlord Liu Bei into Yi Province to counter the threat posed by Zhang Lu, he warned Liu Zhang that Pang Xi might secretly harbour the intention of overthrowing him. In 214, after Liu Bei seized control of Yi Province from Liu Zhang, he appointed Pang Xi as