模糊搜索，支持用汉字用声母查询。模糊匹配函数，判断字母c是否为汉字（c1c2）的声母。（一个汉字由两个字节构成，且每个字节的最高位即左边第一位为1）-Fuzzy search, support the use of Chinese characters with initials query. Fuzzy matching function to determine whether the letter c for the Chinese characters (c1c2) initials.