public static boolean isChinese(String chinese) {
        String regex = "^[\u4E00-\u9FA5]+$";
        return isMatch(regex, chinese);
    }
@Test
    public void testChinese() {
        Assert.assertEquals(true, PatternKit.isChinese("你好"));
        Assert.assertEquals(false, PatternKit.isChinese("Hello"));
    }