Editorial Policy

We create pages to help learners complete real study tasks, not to mass-produce pages for search traffic.

How content is made

Chinese source lessons are reorganized and checked for connection rules, examples, and answers. Other editions use assisted translation with checks of structure, Japanese source sentences, and key terms. We do not claim unverified native-language review.

Corrections

Send the page URL, original wording, and your proposed correction through the contact page. Verified changes receive an updated revision date.