Beida Ren (北大人), Theoretical Physics, Investment Management, Hedge Fund, Startups, Back to Physics. All Things Made by Apple, and Beaches. zzbar=(x+iy)(x-iy)

Manhattan, 重庆, Fire Island
Joined March 2009
Almost there
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People from all over the world chilling on a Tuesday night at a place called “72 strange towers” at ZhangJiaJie.
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In spite of all the AI hoopla, Twitter’s algo is still very stupid. It shows me Korean contents just because I’m currently using South Korea as my VPN server location while traveling in China.
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On a hiking trail leading to the Heaven & Earth Column.
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Zhangjiajie Grand Canyon: glass bottom bridge and zip-line across the canyon.
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Watching a rural auntie with a heavy Hunan accent communicating with a foreigner via a smartphone translator, the conversation seems to be going well, orders taken, and a happy meal ensured.
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I speak my native Chongqing dialect with the auntie and found out she is 土家族人 (Tu people indigenous to the region). They don’t have their own language and speak 土家语(Bifzivkar).
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For a brief introduction to the Tujia people, Wikipedia does a decent job: en.wikipedia.org/wiki/Tujia_…
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First train of the day out of Chongqing East station -> Zhangjiajie National Park. The new Chongqing East station is humongous even by Chinese standards. Zhangjiajie National Park is famous worldwide due to the film. Avatar. national-parks.org/china/zha…
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The two-and-a-half-hour ride is mostly in tunnels; the tunnel rate is about 78%. Amazingly, the 5G mobile signal on my iPhone consistently shows full bars.
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Train speed is around 300km/h, with top speed at 350km/h.
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Jane Street is one of the loveliest streets in Greenwich Village, especially now with the autumn foliage. Sell everything and take an afternoon stroll on Jane Street.
Jane Street lost 15bn$ when Situational Awareness HF had to fire sale its assets to Citadel Jane Street is one of those firms so big and massively levered that can move the whole market this much this quickly if they start imploding Just a pure gut feeling I’d like to share
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Apple Map navigation guidance doesn’t know what to do in a 3D city. 😆 Also, China Mobile 5Ga is new. WTF is 5Ga?
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I’m just so happy the feud between hipsters and hipster-turned celebrities is happening in Brooklyn now, not in the village anymore where breeders with baby strollers and golden retrievers roam free.
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Only green on my screen today: AAPL and WMT. I’m guessing people will not give up their iPhones as long as they can still afford WMT groceries. Everything else can go.
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Alaska Airlines inflight WiFi powered by Starlink is intermittent and frustrating. Not as good as Elon Musk would like us to believe. However, it’s easy to sign in via one-click Apple Pay ($8 for the duration of the 6-hour flight).
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Me and My bags are over Butte, Montana, Apple Airtag and Findmy items.
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