Why didn't the Japanese invaders attack Macao?

No, the Japanese invaded Hong Kong. Everyone in Hong Kong knew in primary school that Hong Kong was occupied for three years and eight months. Nowadays, there is an annual commemoration of the Anti-Japanese War, and many people ask the Japanese government to exchange the military uniforms used during the occupation.

Macao was really not occupied by the Japanese, and it had nothing to do with the return to China, because by the 193s, Japanese immigrants to Brazil had exceeded 3 million. Brazil used to be a colony of Portugal, and Portugal was worried about the security of Macao, so it sent a note to the Japanese government under the guise of Brazil: "If Japan invades Macao, Brazil will surely repatriate all the millions of Japanese overseas Chinese who have settled in Brazil." Therefore, for the sake of its own interests, Japan has never dared to get its hands on Macao, although it is within easy reach.