In recent years emigtation problem has become a hot topic, and those post-60s generations are now facing retirement problems.
Hong Kong, as the most expensive city in the world, local citizens got married and had raised one or two children, by the time of retirement, general middle classes can probably only own a fully paid premises and some liquid assets, so if they want to retire with financial freedom, they may think of the problem of short term relocation even though not considering emigration.
After border reopening in early February this year, many Hong Kong people immediately returned to China to hunt for new premises and part of them also made arrangements to find retirement homes in the future. They still care about Hong Kong, so they may not be willing to sell their fully paid premises and emigrate to China or overseas.
If they temporally relocate to China , they can rent out the Hong Kong premises, and the rental incomes are probably enough to cover the daily expenses of relocation to the mainland. If they move overseas, as long as they stay less than half year each time and are not local tax resident, they can probably avoid paying local heavy taxes. Traveling between China and abroad in this way is indeed an good option for retirement.
If their destinations are United States, Canada and the United Kingdom, do not arrive in winter, because the local winter is much colder than Hong Kong, so if they choose to arrive in winter, they will feel the freezing wind after landing, which is easy to cause uncomfortable feeling and even depression.
Recently, a Hong Kong YouTuber chose to immigrate to the UK in this January, and returned back to Hong Kong three months later. If this person chooses to arrive in May, his feeling might be completely different.
I know a friend who decided to emigrate to Toronto, Canada 20 years ago, he arrived in January, but after living there for a month, he couldn't stand the freezing winter and immediately flashed back to Hong Kong.
Three years ago, this friend emigrated to Toronto again in May. Since arriving soon , he enjoyed the coming warm spring. Until now, he has been living in the there for three years.