Park Bo Gum and IU’s When Life Gives You Tangerines has become one of the rare K-dramas to have made waves in China, where access to South Korean content remains limited. Set against the backdrop of Jeju Island, the show also features a special cameo by Hometown Cha-Cha-Cha star Kim Seon Ho, who plays the love interest of Ae Sun’s daughter. One scene, in which Seon Ho smiles before walking down the aisle, has gone viral, and it has started a social media trend in China. C-drama celebrities like Chen Zheyuan and Bai Lu have jumped on the trend, which has racked up millions of views within hours and is now being dubbed the ‘Kim Seon Ho Smile Challenge.’ Also read: When Life Gives You Tangerines: Meet real-life couple of Jeju who inspired IU and Park Bo Gum’s character C-drama celebs hop on When Life Gives You Tangerines trend  Chen Zheyuan, who shot to global fame for playing Duan Jiaxu in Netflix’s beloved C-drama Hidden Love alongside Zhao Lusi, is the latest to join the …