/** First and last Chinese character with known Pinyin according to zh collation */
private static final String FIRST_PINYIN_UNIHAN = "\u963F";
private static final String LAST_PINYIN_UNIHAN = "\u84D9";
/** The first Chinese character in Unicode block */
private static final char FIRST_UNIHAN = '\u3400';
private static final Collator COLLATOR = Collator.getInstance(Locale.CHINA);
private static HanziToPinyin sInstance;
private final boolean mHasChinaCollator;