TechFlow Desk: US-China Reciprocal Tariff Framework Announced, Bitcoin ETF Weekly Inflows Hit $2.4 Billion, Highest Since October

AI / Large Language Models

Claude Opus 5.5 Official Prompting Guide Released, HN Community Sparks Debate with 124 Comments

Anthropic released prompting documentation for its next-generation Opus 5.5 model. Community discussions center on whether prompts need to be as meticulously crafted after the model's capability leap. Amid the transition from old to new models, the most practical signal is that Anthropic has finally stepped in to teach users how to write prompts directly.

Hot Take: Some believe prompt engineering is dying, while others feel this document proves it's actually becoming more complex.

Source: Claude Official Documentation | HN Discussion

China Considers Allowing Purchases of New NVIDIA Chips

The Information reports exclusively that China is exploring the possibility of resuming purchases of NVIDIA's new products. Coupled with the US-China reciprocal tariff reduction framework, this is the core signal intersecting hardware and macroeconomic trends today.

Source: The Information

IonQ Secures NVIDIA Partnership and Quantum Error Correction Breakthrough, Stock Surges 15%

Quantum computing company IonQ announced a partnership with NVIDIA and demonstrated real-time quantum error correction technology. The hybrid quantum-classical compute narrative is heating up again, but the stock price reaction reflects the narrative rather than revenue.

> Hot Take: Quantum computing rallies always hinge on "shaking hands with NVIDIA," but NVIDIA's own stock is down today, making the true value of this handshake questionable.

Crypto / Web3

Bitcoin ETF Sees $2.4 Billion Weekly Net Inflow, Highest Since October 2025

Despite Bitcoin dropping below $83,000, institutional capital is entering at a pace unseen in months. Price falling while ETFs buy indicates selling pressure comes from leveraged positions rather than long-term capital.

Source: Cointelegraph

Bitcoin Drops Below 83K, Liquidity Hunts Weigh on Bulls

Analysts point out the current trend follows a classic "liquidity sweep" pattern: stopping losses are triggered first before direction is decided. The yearly open price has become an insurmountable hurdle for bulls in the short term.

Source: Cointelegraph

Bitget Resumes Bitcoin Withdrawals, Hacker Swaps via THORChain to ETH

The fallout from the exchange security incident continues. While the resumption of withdrawals is a sign of stabilization, hacker funds remain active on-chain.

Source: Cointelegraph

Ondo Becomes Largest Provider of Tokenized US Treasuries, TVL Approximately $2.9 Billion

Ondo launched a smart portfolio (powered by BlackRock's strategy), expanded tokenized equities, and went live on the NEAR chain. The RWA sector has shifted from "storytelling" to "competing on AUM."

Source: Ondo

Hong Kong SFC Expands Financial Reporting Oversight for Licensed Crypto Firms

The SFC signed a memorandum with audit regulators, aligning financial transparency requirements for crypto firms with those of traditional finance.

Source: Cointelegraph

Chips / Hardware

"Owe $10 Billion in NVIDIA Stock" Tops HN with 328 Comments

A personal narrative regarding NVIDIA stock options has gone viral in the tech community. The core discussion focuses not on chips but on the "golden handcuffs" inherent in tech industry compensation structures. Both employees and executives cannot escape the cycle of exchanging time and well-being for equity.

> Hot Take: The real chip war in Silicon Valley isn't fought in fabs, but in vesting terms between departed employees and former employers.

Source: HN Discussion

A-Share Compute Hardware Sector Crashes, the "Yi-Tian-Zhong" Trio All Plunge Over 8%

The ChiNext and STAR 50 indices fell over 4%, led by drops in Zhongji Innolight, Eoptolink, and TFC Optical Communications. The retreat in compute hardware, combined with the suspension of Nasdaq ETFs due to high premiums, has caused market sentiment to spread from AI hardware to the entire growth sector.

Source: cls.cn | Wall Street CN

Tech Companies

"When Did Google Get So Weird?" Scores 1402 Points with 757 Comments on HN

A lengthy article traces Google's trajectory from "Don't be evil" to a comprehensive decline in product experience. The comments section has turned into a collective nostalgia session for former employees and power users. Search quality, ad density, and product line confusion are repeatedly cited.

Source: HN Discussion

16-Year-Old Discovers Microsoft Internal API Vulnerability Using AI, Earns $5,000 Bounty

The vulnerability, involving over 17 trillion lines of data, was discovered by a minor using AI tools. The barrier to entry for security research is rapidly being lowered by AI, putting vendor bounty programs to the test in the new era.

Source: ITHome

Users Urge Xiaomi 18 to Drop Anti-Peeping Screen, Lei Jun's Comment Section Explodes

A highly upvoted request appeared in Lei Jun's comment section demanding a non-anti-peep version of the Xiaomi 18 series. The compromises in viewing angles and brightness imposed by anti-peep screens have led many users to prefer better displays over privacy.

Source: Zhihu

US Stocks

Iran Tensions Escalate, Brent Oil Returns Above $100, US Pre-Market Chip Stocks Fall Broadly

The 10-year US Treasury yield hit its highest level since 2007, weighing on all precious metals. With oil prices, interest rates, and tech valuations simultaneously pressuring markets, risk assets have nowhere to hide.

Source: Wall Street CN

How Did US Stocks Perform After the Last Five Surge Periods in Treasury Yields?

cls.cn analyzed historical data: stocks generally faced pressure early in yield surges, but subsequent divergence depends on whether inflation or growth drives the move. This current round aligns more closely with a combination of "rate fear + supply shock."

Source: cls.cn

Finance / Macroeconomics

US-China $30B Reciprocal Tariff Reduction Framework Announced, Over 90% of Products Granted MFN Status

With 4.67 million engagement points on Zhihu, this is the single largest topic across the Chinese internet today. Its impact on tech supply chains and risk appetite in crypto markets will gradually materialize.

Source: Zhihu

Trump Rejects Proposal to Reopen Strait of Hormuz, Brent Oil Breaks Above $107

Geopolitics once again becomes the dominant driver of oil prices, with global bond yields hitting simultaneous new highs since 2007. Gold falls below $4,200, disrupting both safe-haven and inflation narratives.

Source: CNBC | Barron's

Spot Gold Falls Nearly 3% to $4,163, Silver Drops 5% to $61

Precious metals see sharp pullbacks. The combination of rising oil and falling gold suggests the market is pricing in "war, not recession."

Source: jin10.com

New Products / Emerging Trends

SpaceX Starship Launches to Orbit for the First Time Today

The world's largest rocket is attempting its first orbital launch. Regardless of success or failure, it will rewrite the physical and cost boundaries of spaceflight.

Source: Space.com

The Undercurrent Today

The US-China tariff reduction framework offers breathing room for supply chains, but escalating tensions over Iran push both oil prices and bond yields higher simultaneously, squeezing risk assets from both sides. Despite $2.4 billion in inflows, Bitcoin ETFs couldn't prevent price breakdowns, and the collective retreat in A-share compute stocks signals the market shifting from "AI faith" to "rate fear." Meanwhile, news that China may resume purchasing NVIDIA chips lands right between tariff relief and compute demand—if realized, this would be a structural signal larger than any single headline today.