Well, if it really is Collin Koh, then he'll eventually come around like every other Singaporean, but it might take another 5-10 years or so.
Lee Kuan Yew really was a visionary when he assessed that China was likely to succeed.
He first? said this publicly to Deng Xiaoping back in 1978...
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I would expect that most other people will come around in the future, so it's just a matter of patience and explaining how the world has or will change, and how that can be a good thing.
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And Singaporeans will benefit personally from such a change.
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At the moment, there is still a lot of casual racism against East Asians, which is being fuelled by the Western media. It doesn't help that Trump is espousing an America which is explicitly ethno-nationalist and xenophobic, with China as the boogieman.
(American ethno-nationalism, along the lines of blood and soil, doesn't really make much sense. So what you end up with is an agenda that places people "first" who are White, Christian and of European heritage
But where does that leave everyone else?
Given that in many places, a majority of the people would be "minorities", such a path is disastrous for the internal politics and cohesion of the USA)
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But a rich and technologically advanced China which is globally dominant will change global perceptions of East Asians generally. At a minimum, this will turn into grudging respect. At a maximum, China is held in the same high-regard as America in the past.