Failing to correctly identify CST(TimeZone)

Environment:
The System TimeZone is UTC +8:00 - CST(China Standard Time)
mariadb:
SHOW VARIABLES LIKE '%time_zone%';
system_time_zone CST
time_zone SYSTEM

It happens when i create a preparedStatement and set a timestamp value

private Timestamp occurTime;

 public Timestamp getOccurTime() {

        return occurTime;

    }

    public void setOccurTime(Timestamp occurTime) {

        this.occurTime = occurTime;

    }

 public void convertToStatement(PreparedStatement preparedStatement) throws SQLException {

  preparedStatement.setTimestamp(1, occurTime);

}

The correct value is '2016-1-12 10:00:45 257452' AND The value in _stmt(preparedStatement ) is '2016-1-11 20:00:45 257452'

The gap is 14 hours ,So is it convert incorrectly to Central Standard Time (UTC -6:00)?