def METHOD_NAME(value_string: str) -> str:
    if not value_string:
        return ''
    # 000 -> '零' , 0 -> '零'
    value_string = value_string.lstrip('0')
    if len(value_string) == 0:
        return DIGITS['0']
    result_symbols = _get_value(value_string)
    # verbalized number starting with '一十*' is abbreviated as `十*`
    if len(result_symbols) >= 2 and result_symbols[0] == DIGITS[
            '1'] and result_symbols[1] == UNITS[1]:
        result_symbols = result_symbols[1:]
    return ''.join(result_symbols)