Over on his bilibili page,
https://t.bilibili.com/494793611329307952, they seem to have written a explanation about that Touhou Nanjing denial page.
>大家好,关于园长的远古东方推理本的节奏,看板已经和园长好好的确认过了,确认的内容如下:园长本来想表达的意思是‘’既然有隐藏历史的人, 那么也会有认为这个是历史的人存在,每个人心中虚实的暧昧才是幻想乡的核心‘’(关于涉及国内的敏感部分我们已经和园长明确确认过了是属于被隐藏的部分),但是即便是日本国内也有人故意曲解内容然后去恶意投诉园长的,关于这部漫画,园长已经决定修改这一页并增加说明文然后以下载版的形式再版了,请大家知晓。
Google translate
>Hello, everyone. Regarding the rhythm of the ancient oriental reasoning book of the principal, the Kanban has been well confirmed with the principal. The confirmed content is as follows:The principal intended to express the meaning of “Since there are people who hide history, there will also be people who think that this is history. The ambiguity in everyone’s heart is the core of Gensokyo.” We have clearly confirmed with the principal that it belongs to the hidden part), but even in Japan, some people deliberately misrepresent the content and then maliciously complain to the principal. Regarding this comic, the principal has decided to modify this page and add The explanatory text is then republished in the form of a download version, please know.