On May 24th, the online drama "The Trace" produced by Penguin TV was officially launched in Qingdao. For ths shooting of the drama the cast and crew are receiving a strong support and assistance from the Qingdao Public Security Department. Before the beginning of the shooting the six main actors received training in forensic, medical autopsy, police business, etc. The screenwriter of the drama, Bi Yan, has a master degree in English literature and a bachelor degree in law. The drama will shoot in Qingdao for 4 months and it will air exclusively on Tencent before the end of the year.