What did wong hau-hon have to say about chinese immigration restrictions in canada (which were similar to the u.s. chinese exclusion act)?

Questions from Ida B. Wells, “Lynch Law in America,” 1900 pdf:
1. Why did Wells describe lynching as an “unwritten law?” What were the “statutes” of this “unwritten law” (p. 1-3)?
2. According to Wells, what were the main reasons why lynchings actually occurred (p. 3-6)?
Questions from Wong Hau-hon pdf:
3. What were some of the experiences and hardships that Wong Hau-hon and other Chinese railroad workers experienced in North America? Why was their work so dangerous?
4. What did Wong Hau-hon have to say about Chinese immigration restrictions in Canada (which were similar to the U.S. Chinese Exclusion Act)?
Question from both documents :
5. Does the history surrounding nativist anti-immigration politics and the Chinese Exclusion Act have any useful lessons for today?