public static byte[] startAzwan(int npc) {
            MaplePacketLittleEndianWriter mplew = new MaplePacketLittleEndianWriter(10);
            mplew.writeShort(SendPacketOpcode.OPEN_UI_OPTION.getValue());
            mplew.writeInt(70);
            mplew.writeInt(npc);
            mplew.writeInt(0);//new143

            
            return mplew.getPacket();
        }