You have to look at this issue from a Hong Kong resident point of view (I am not a Hong Kong resident). Since the handover to the China government, the average living cost is higher than ever before [1], real estate price skyrocket due to huge amount of investment from China[2]. Some Hong Kongers
may blame these issues to "mainlanders" for "disrupting" their live.
Also in 2013 "mainlanders" rush to Hong Kong to buy milk powder due to the poisonous milk power scandal in China,
causing a shortage of milk power in Hong Kong [3]. I certainly wouldn't be happy if suddenly I can't buy milk power for my child because my neighbour had bought all of them.
Also in 2013 "mainlanders" rush to Hong Kong to buy milk powder due to the poisonous milk power scandal in China, causing a shortage of milk power in Hong Kong [3]. I certainly wouldn't be happy if suddenly I can't buy milk power for my child because my neighbour had bought all of them.
[1] https://www.scmp.com/news/hong-kong/article/1143157/hong-kon...
[2] https://www.scmp.com/business/article/3002396/hong-kong-home...
[3] https://www.worldjournal.com/6148953/article-%E9%A6%99%E6%B8...