The background of this author, who is a Chinese immigrant, likely influenced his point of view in several ways:
Personal experience: As a Chinese immigrant, the author may have directly experienced the impact of the Chinese Exclusion Act of 1882. This act severely restricted Chinese immigration to the United States and imposed various discriminatory measures on Chinese immigrants already in the country. These experiences may have shaped the author's perception of the American "foreign devils" and their treatment of Chinese immigrants.
Cultural perspective: The author's cultural background as a Chinese individual may have influenced his point of view. Chinese culture places a strong emphasis on respect, reciprocity, and adherence to agreements. Therefore, the author's criticism of the American "foreign devils" for breaking the treaty and shutting out the Chinese immigrants may stem from a cultural expectation of honoring agreements and treating others fairly.
Sense of betrayal: The excerpt suggests that the author feels betrayed by the American "foreign devils" due to their perceived violation of the treaty. This sense of betrayal may stem from the author's initial belief in the fairness and reciprocity of the treaty, which allowed free movement between China and the United States. The subsequent actions of shutting out Chinese immigrants may have deepened the author's resentment and shaped his negative perspective.
Overall, the author's background as a Chinese immigrant likely influenced his point of view by providing him with direct experiences, cultural values, and a sense of betrayal that informed his critique of the American "foreign devils" and their treatment of Chinese immigrants.