Chinese and Japanese SEO for search engines requires strategic multilingual link building in those languages.
Previously for Chinese Baidu SEO, it was possible to increase your Baidu SERP rank via English language site backlinks containing Chinese keywords, this has recently changed and now these types of links are usually considered spam.
The best link building strategy would involve getting links from sites with the same language in addition to sites from a country code top level domain and hosted on a IP who’s location relates to your sites language. However search engines do not use only these pieces of information for determining backlinks locations and relevance. In reality the search engines choose to refer to multiple pieces of information to determine the target region and relevance of a backlinks from of a website.