National Chiao Tung University professor Wei Yung, a former KMT legislator, refers to Su Qin and Zhang Yi, famous strategists during the Warring States period, as an example of track-two-type contacts, and says that think-tanks, PR companies, academics and retired officials can all play a similar role today.
前國民黨籍立委、交通大學教授魏鏞指出，第二軌道早在春秋戰國時代就有蘇秦、張儀的例子，現在的智庫和公關公司、卸任官員、學者都可以扮演此類角色。