"solo_singer" . . . . . . "Thunder"@en . . "Cheondung (stage name)"@en . . . . . . . "1990-10-07Z"^^ . "1990Z"^^ . . "Park Sang-hyun"@en . . "2009Z"^^ . "Park Sang-hyun (Korean: \uBC15\uC0C1\uD604; born October 7, 1990) better known by his stage name Thunder (Korean: \uCC9C\uB465; Cheondung), is the younger brother of 2NE1's vocalist Sandara Park, a South Korean idol and was a member of South Korean idol group MBLAQ until December 16, 2014, when it was announced that Cheondung had departed from the group to focus on studying music for a while."@en . . "Park, Sang-hyun"@en . . . . . "Singer" . .