Let me do some clearing on Hong Kong's issues, which I don't think there are many active Hong Kong users here.
Hong Kong main financial activities are like many major developed city (Tokyo, New York), Finance & Banking, Tourism & Service Industry. And like Japan in the past, Real Estate is also one of our driving force (sadly). Because the size of Hong Kong and lack of satellite cities available (like Singapore, we are just a city state, we are not considered Chinese citizen and moving out of HK into China is a pain), our Real Estate price are always unaffordable to normal workers. To make matter worse, Chinese rich people & officials need ways move their capital earn from shady deals outside of China. Other than US & European countries, HK is a common safe harbor. Thus our housing cost drive even higher.
Second, Chinese are the only people that our immigration system has no control over. Our government grant 150 quotas to China per day, and it is their government decided who will moved here. As a result, these immigrants are unwanted. They often lack professional skills and proficients in our language. Often make them leeching on our welfare system. Most noticeable is our government-housing system. To make matters worse, they are some of the most pro-Beijing voters here, undermining our election system by systemically flooding with pro-Beijing candidates.
Third, Chinese tourists. China food safety regulation is a joke, also Chinese themselves do not trust their own merchants with fake/copycat products. So they are leaving China to buy everything they needs, baby formulas, jewelry, luxury items, you name it. Hong Kong is one of the closest and easiest place you can get their hands on. So it cause distortion in our daily life. Instead a balance mix of stores in our communities, our merchants crave to Chinese tourist needs and keep opening shops that can earn the China money. For my personal example, just 100m surrounding my home, we have 6-7 Pharmacy, 4 Jewelry stores, and 3 currency exchange shops.
So yes, Xenophobia is a common cheap tactics that Chinese like to use to describe our distaste towards them. We welcome all people around the globe, just we don't want any of the Chinese invading our home.