The list of high-profile executives in China that have been investigated, face exit bans, or have just gone missing, keeps growing

• A slew of high-profile leaders have been targeted by China's tightening regulations.
• In recent months several executives have been barred from leaving the country through exit bans. 
• In June, the US State Department issued an updated travel advisory to China in light of the bans. 

China has grown noticeably colder toward businesses — and their top leaders — in recent years.