Historical question, why didn't I attack Macao and only occupy Hong Kong during World War II?

It has nothing to do with Portuguese neutrality. It is not uncommon for the Japanese troops stationed in various places to be blindly loyal to the monarch, act rashly, disobey orders and often attack the territory of neutral countries. For example, it attacked Portugal's East Timor, Vichy France's Vietnam (or Nazi Germany's puppet), and also supported Thai troops to attack French Cambodia.

It has nothing to do with Brazil. Brazil has long been independent, and the Portuguese and Brazilians have always looked down on each other, and the contradiction is deep. It is impossible to give such a big face to a tiny place in other countries. During World War II, Brazil also joined the Allies and sent troops to Europe. At that time, the Brazilian government also took some actions against overseas Chinese in Japan, such as closing the Japanese media and allowing overseas Chinese schools in Japan to teach only Portuguese. At this time, many Japanese overseas Chinese in Brazil have emigrated for two or three generations, and most of them don't know Japanese or even their hometown. Besides, even a country that dares to provoke the United States is afraid of a Brazil? !

According to the relevant information and opinions on the Internet, I guess Japan wants to leave an intelligence station to monitor the whereabouts of allied forces in Southeast Asia and nearby countries. There is also Goa, India (a small city occupied by Portugal in southeast India), where both German and Japanese troops set up intelligence stations to spy on the news of British India opposite. Because it is a neutral territory, it is not convenient for Britain to start at will. In addition, the military value of occupying Macao is not high, the commerce is not as developed as Hong Kong, and there is no capital acquisition.