One of the (many) problems with the way that modern Vietnamese history has been written about (both by historians inside and outside of Vietnam) is that there is virtually no recognition of any Chinese intellectual influence on Vietnam in the 1920s and 1930s when in fact there was significant influence.
Everyone recognizes that the traditional Vietnamese elite were deeply influenced by the ideas of their counterparts in imperial China. Everyone also recognizes that early-twentieth-century reformers like Phan Bội Châu were influenced by the ideas of late-Qing reformers like Liang Qichao.
But then after that. . . there is virtually no mention of any kind of intellectual connection between members of the Vietnamese elite and their counterparts in the Republic of China (ROC).