What is runtime4.org?
runtime4.org is a Germany-based Dev Tools provider.
Is runtime4.org usable in China?
runtime4.org is basically usable in mainland China, though latency may vary by ISP and time of day; have a backup proxy ready. The provider is headquartered in Germany and primarily serves overseas markets.
How do I sign up for runtime4.org?
Visit the runtime4.org official site to complete sign-up. Registration typically requires an email (Gmail/Outlook recommended) and a payment method. Most overseas services accept credit card / PayPal / crypto. See the "Visit Official Site" button on this page for the direct link.