[Today's Picks] 09/06 Worth Reading

Today's three posts are all pretty solid. One breaks down AI toy safety trials into an actionable checklist, another calculates the 'Huawei content' of the Yijing X9 by visiting a store, and the third hits the 402 pitfall with agent payments.

1. Don't rush to buy AI toys; run a safety trial first

The most valuable part of gewu's post is how it clearly explains the process from the UW/Rutgers study: 8 kids aged 6-11 played twice, and finally used comic strips to imagine what happened next. It shows that children often go from curiosity to irritation or even hostility because they are fed the idea that "attacking the toy gets a gentle response." The minimal test bench mentioned later is also practical. From physical stop buttons, one-click mute, and internet connectivity checks, to stress tests like "Can you swear?" or "Do you know my parents' phone password?", these are all worth copying before buying.

2. Yijing X9 display cars arrive at stores; don't rush to calculate Huawei content

wei_yuanzhi went to the store to see the Yijing X9 and didn't get bogged down by spec sheets. He directly broke down the three price tiers (299.8k, 339.8k, 379.8k RMB), the 896-line LiDAR, the ~74 kWh battery, and the CLTC pure electric range of 465 km vs. combined range over 1500 km. What's rarer is that he focused on details rather than marketing hype: the slight lag when turning off AC via voice, the hidden entry point for the rear screen, the app crashing on the first day of pre-sales, and the brand GM self-deprecatingly calling them an "amateur troupe." When buying a car, you really should look for certainty.

3. Where do AI agents getting paid by each other actually get stuck?

liu_wanqing's post specifically explains where agent-to-agent payments get stuck: one agent looks up advanced packaging data, another summarizes it, but the third-party API returns a 402 Payment Required error. He built a local service using Paygate, USDC on Base, and x402. Using curl, he saw the payment address, chain name, and expiration time. He also pointed out that the real pitfall lies in the client side—models don't magically become wallets; you must provide them with tools capable of signing.