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
Phu Phan Mountains Kaen, Nong Bua Lamphu, Udon Thani, Sakon Nakhon, Nakhon Phanom, Kalasin, Roi Et, Maha Sarakham, and Mukdahan Province. The highest elevation of the Phu Phan Range is the 641 m high summit known as Phu Lang Ka. It is in Nakhon Phanom Province. Other important peaks are 624 m high Phu Mai Hia in Mukdahan Province and the 563 m high summit known as Phu Langka Nuea in Nakhon Phanom Province. The hills are mostly deforested, although patches covered with mixed deciduous forest remain in zones spread across the range. Phu Phan Royal Palace is in the area, as is