It is famous abbreviation, which means 'Hi' and it is same pronunciation as 'Hi'. It is actually '하이'(하이 is either Hi) but they make it shorter and it became 'ㅎㅇ'.
<.7.9.7.6.>Stick <Hand>Figure<Mangus> Atristry Starts In 4.79 Nanoseconds And Ends In 6 Hours, Do Not Confuse Return Of Investments, Monetary Wise And Time Lapses, Teaching Wise, Start Escaping<.7.9.7.6.>
<.7.9.7.6.>Stick <Hand>Figure<Mangus> Atristry Starts In 4.79 Nanoseconds And Ends In 6 Hours, Do Not Confuse Return Of Investments, Monetary Wise And Time Lapses, Teaching Wise, Start Escaping<.7.9.7.6.>
<.7.9.7.6.>Stick <Hand>Figure<Mangus> Atristry Starts In 4.79 Nanoseconds And Ends In 6 Hours, Do Not Confuse Return Of Investments, Monetary Wise And Time Lapses, Teaching Wise, Start Escaping<.7.9.7.6.>