Rules of Lips and Tongues

To look for his younger sister who disappeared mysteriously, racer Jerry Han went to the famous J Club and accidentally found a murky industry behind the normal operation of a night club - a “Night of Girls Group”, which served the elite society exclusively. He met a mysterious man Alan Liu, who disguised in female attire with ambigous characters. Can the two of them find out the secret of the club? Who is the mastermind behind all this? (Source: Webnovel)