Wang believed gradual integration will ultimately lead to reunification, as the cross-Straits relationship has been better than ever, with vast improvements starting in 2008.
"For many years, the Taiwan question has been a liability in China-US relations that undermines mutual trust and disrupts cooperation," he said.
"However, if the US can go along with the prevailing trend of peaceful development of cross-Straits relations, and genuinely appreciate and respect China's efforts to oppose separation and achieve peaceful reunification, the question - once a liability and negative factor in our relationship - will be turned into an asset and a positive factor."
Wang, who served as director of the Taiwan Affairs Office of the State Council, China's cabinet, from 2008 to 2013, believes such a development will guarantee the steady long-term growth of Sino-US relations and open prospects for comprehensive cooperation.
The 59-year-old career diplomat said the two countries should also work together to produce substantive results in their cooperation over hot spot Asia-Pacific issues.
He cited the example of the Korean nuclear issue upon which he said China and the US have built much consensus. He described the Six-Party Talks as an "effective mechanism for dialogue".
He explained: "The parties concerned should commit themselves as soon as possible to the September 19 Joint Statement and work together to create the necessary conditions for the resumption of the Six-Party Talks."
He was referring to the statement on the denuclearization of the Korean Peninsula announced by the Six-Party Talks eight years ago. Wang was China's representative to the Six-Party Talks when they started in 2003.


Storms leave 97 dead, 58 missing in Mexico
New model of indigenous surface-to-air missiles testfired
118.28-carat diamond to be auctioned in HK
Maternal love under streetlight
Naked foreign student sits in the middle of a road in Haikou
Colorful Yunnan: Enjoy the natural beauty
Harbin named Chinese city with most beautiful women
New college students' military training in Guangzhou
Rugby girls
PLA's 38th Group Army conduct training
Residences of the royal house of Savoy
The last days of Wan Aihua
Highlights at 12th National Games of China
Beijing Film Academy welcomes freshmen
Large mahjong party sets new world recordDay|Week|Month