Hanyu Pinyin is the phonetic notation of Chinese characters. The same combination of Pinyin can give phonetic notation to several Chinese characters with the same pronunciation, but its connotation is uncertain. Therefore, a previously applied or registered pure Chinese Pinyin trademark generally does not constitute similarity with a Chinese character trademark with the same pronunciation (except for Chinese Pinyin trademarks with specific meanings), which is commonly said that "Pinyin does not exclude Chinese characters." On the contrary, even if a previously registered Chinese character trademark is not marked with Hanyu Pinyin, others are not allowed to apply for a pure Chinese Pinyin trademark with the same pronunciation as the trademark, which is commonly known as "Chinese characters exclude Pinyin".