Posts
All the articles I've posted.
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Block Inbound Traffic from Mainland China
A technical guide on using nftables with GeoIP to block inbound traffic from China, featuring a custom Go tool (auto-update-mmdb) that automatically downloads GeoLite2 database and generates IP sets for firewall rules.
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Two different IDPs
An explanation of the two types of International Driving Permits under the 1949 Geneva and 1968 Vienna conventions, why Chinese citizens cannot easily obtain them, and the workaround through US state license exchange.
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The worst Apple Store in the world - Apple Taipei 101
A detailed account of an extremely frustrating AppleCare+ replacement experience at Apple Taipei 101, where staff refused in-store service for an international iPhone, contrasted with successful resolution at the nearby Xinyi A13 store.
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Traveling from Mainland China to Taiwan
A comprehensive guide for mainland Chinese residents to visit Taiwan using an overseas-issued entry permit, detailing the application process, transit strategies via Hong Kong, and practical tips for navigating Chinese exit controls.
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WeChat multi-opening on iOS
An updated 2025 guide to WeChat multi-opening on iOS with push notification support using specific Bundle IDs like com.tencent.qy.xin and proper Apple Developer Capabilities configuration.
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I applied for Real ID
The process of applying for a Real ID at Pennsylvania PennDOT after the May 2025 enforcement date, plus a strategy of maintaining both PA State ID (Real ID) for flights and NJ DL for longer validity.