There was never a time when US-China relations were friendly. You sound like the morons that believed US-Russia relations were friendly because Bush said he looked into Putin's eyes and saw a good man.
> The current animosity is recent (post 2015) and previous animosities are pre-Singapore independence
More moronic nonsense. The 'current animosity' dates back to obama's administration ( pre-2015 and post singapore independence ) when the state decided to focus on containing china. I know you are a moron that knows nothing, but Trump just piggybacked on obama's policy.
2009 - Obama pivots to asia to confront china.
https://en.wikipedia.org/wiki/East_Asian_foreign_policy_of_t...
2001 - Downing of american spy plane over china
https://en.wikipedia.org/wiki/Hainan_Island_incident
1999 - Bombing of chinese embassy by the US.
https://en.wikipedia.org/wiki/United_States_bombing_of_the_C...
As I said, why do morons like you comment authoritatively when you know absolutely nothing?