Hwang Dong-Hyuk said he lost teeth from the stress of making Squid Game.Presley Ann/Getty Images for NetflixHwang Dong-Hyuk, the director of "Squid Game," said the Emmy-winning series caused a lot of stress.While Hwang initially swore against creating another season, he said he changed his mind because of money.Netflix will release the second season on December 26.Hwang Dong-Hyuk, the director of "Squid Game," says he was so stressed while making the first season of the Emmy-winning show that he lost "eight or nine" teeth.In an interview with BBC posted on Monday, Hwang reflected on his decision to make a second season.