I chalk that up to his parent not sufficiently channel him in his early teens.
Growing up in the US, I notice a lot of Asian kids having a hard time finding their own identity. It all depend on where you grow up. Sometime, kids try to integrate too hard by trashing their own ethnic/cultural identity.
I grew up in NYC, went to a high school that was over 60% Asian. So there was a lot of incentives to be a specimen, and distinguish myself from my fellow Chinese/Korean peers. I also started reading every "thick" book on Chinese history I could, starting with "Search for Modern China by Jonathan Spence".
Since the gym was next to a large Barnes and Nobles, I read a book a week, returning it to within 30 days as to not incur actual cost.
The interest in history and armaments steered me toward a career as an officer. Interestingly, I read a book by John Antal (choose your own adventure type). Years later, that guy turned out to be my regimental CDR.
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Back to the topic, sort of......
We need to do a better job of molding the next generation of Asians. Foster a unique and expansive identity, based on knowledge and physical strength.
That being said, I've always been a tall/big kid, so I had some mass to work with. I imagine it would be harder if I was 5'5" and 130lb, as this kid seems to be.
Physical Education and strict PE
male teachers is IMO extremely important for boys as they grow up.
They need someone to look up as a "model" and they need to learn discipline because at that age boys are a bit crazy...
Also PE, exercises, gym promotes more testosterone which together with the above mentioned actions, help in growing good, confident, and strong boys into men
There is a growing issue in our societies which is often ignored. Schools are becoming more of child-care centers. Kids are not allowed to play during the breaks, run, have small "fights" between them, be more expressive, assertive, outspoken, rebellious etc
This might not affect girls much, as by their nature they are mostly "soft" on such issues but it presents huge challenges, difficulties and ultimately significantly affects negatively the boys development
There is a reason why we say "boys will be boys", they are naturally different from girls and by tailoring their learning and growing environment around girls, certainly does not help on their healthy development
Anyway, this is an extremely complex issue which has just very recently started to be studied on how it affects the development of boys. However I doubt that this will lead to any changes. I dont think there is any leader on the West willing to touch such a minefield issue.
Maybe China can do something for it, because honestly I am not expecting anything from the West