my-ear-trumpet: Uphold science, eradicate superstition Designer: Cheng Guoying (程国英) 1999, August Uphold science, eradicate superstition Chongshang kexue, pochu mixin (崇尚科学，破除迷信) Publisher: Sichuan meishu chubanshe (四川美术出版社)
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my-ear-trumpet: Uphold science, eradicate superstition Designer: Cheng Guoying (程国英) 1999, August Uphold science, eradicate superstition Chongshang kexue, pochu mixin (崇尚科学，破除迷信) Publisher: Sichuan meishu chubanshe (四川美术出版社)
