Japan invaded Manchuria in 1931. Chinese resistance in Manchuria ended in February 1932.
Japanese captured Beiping ( now Beijing ) in August 1937.
Japanese capture of Shanghai took place in November 1937.
Finally, by the end of 1937 Japanese captured the Chinese capital of Nanjing ( or Nanking ).
Answer:
1. Manchuria,
2. Beijing,
3. Shanghai,
4. Nanjing.