Jensen Huang arrived in Beijing at the invitation of the China Council for the Promotion of International Trade, according to Chinese state-owned television.
The campaign will focus on attracting people from China, Australia, the United States, India, Germany, and South Korea, but there are questions over its cost.
Knocking on more than 20,000 doors in Christchurch and Auckland over the past year has revealed that many people are unaware they suffer from the condition.