Self-preface to the second edition of “My “epidemic year””

Original link: https://www.changhai.org/articles/books/Ebook11_Preface2.php

The preface written by the webmaster for the second edition of the eleventh e-book – “My “epidemic year” –

This article is reprinted from: https://www.changhai.org/articles/books/Ebook11_Preface2.php
This site is for inclusion only, and the copyright belongs to the original author.

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