South Korean actor Song Joong Ki is now the most popular hallyu star in China, a report said on Friday. Fresh from his mandatory military service, Song is the male lead in his comeback TV series, "Descendants of the Sun." He has become more famous than fellow actor Lee Min Ho, courtesy of the drama's popularity, reported The Korea Times .

Song is expected to earn about a billion won, or $860k for a year, since he has drawn 10 advertisers. He follows the footsteps of South Korean actors Kim Soo Hyun in "My Love From the Star" and Lee Min Ho in "The Heirs."

According to Nielsen Korea, "Descendants of the Sun" registered a national rating average of 28.8 percent. On Thursday's eighth episode, Dr. Kang Mo Yeon, portrayed by Song Hye Kyo confessed her feelings to army captain Yoo Si Jin, played by Song Jong Ki.

With South Korean actor Song Joong Ki's rising popularity, it has been found that some of the actor's fans are posting pages on social media and made them appear as being personally managed by the actor. Song's talent agency warned his fans on Monday, Yonhap News reported.

For instance, an Instagram user posed as Song Joong Ki and shared a photo of the actor in Greece, saying, "Thanks for support." Agency Blossom Entertainment declared the account as fake. "Song Joong-ki was briefly on Cyworld in the past, but he hasn't used any social networking services (SNS) since then," said an agency official.

South Korean Cyworld is a social networking site that was popular in the 1990s and 2000s. The agency official stated that there is no SNS account run by South Korean actor Song Joong Ki or the agency currently. "We try to report fake accounts because they may confuse people, but the criteria that make an account fake aren't clear-cut. We've asked some users to stop (posing as the actor), but it's hard when they don't cooperate." The official added.

"Descendants of the Sun" airs every Wednesday and Thursday, 10 p.m. In South Korea, as well as in China.