Last month, North Korea announced plans to create in each province special economic zones, which are like incubators for introducing capitalist methods into the North's tightly controlled, command economy. The North also recently laid out new laws to facilitate foreign tourism and investment. The laws provide foreign investors with special incentives and guarantees, while giving local leaders greater autonomy to promote themselves and handle business decisions.
But even before Jang's execution, it was unclear how far Pyongyang was willing to go.
The North has shown no willingness to abandon its nuclear weapons program to get out from under international trade sanctions. That makes investment or financing from major international organizations difficult if not impossible.
It also means the success of the zones hinges on China, North Korea's only major ally, and Jang was seen as a crucial conduit between Pyongyang and Beijing, along with being a supporter of China-backed reforms, such as the zones, to revive the North's moribund economy.
Jang met with top Chinese officials during their visits to Pyongyang, and in 2012 traveled to China as the head of one of the largest North Korean delegations ever to visit the Chinese capital to discuss construction of the special economic zones, which Beijing hopes will ensure North Korea's stability.
Yun, however, downplayed Jang's importance in policymaking and said his removal would instead speed progress on the economic front because he was a threat to the unity of the nation. He said Jang's execution should not scare away Chinese investment, which is crucial to the success of the zones.
"By eliminating the Jang Song Thaek group, the unity and solidarity of our party and people with our respected marshal at the center has become much stronger, our party has become more determined and the will of our soldiers and people to build a prosperous socialist country has been strengthened," Yun said. "Our State Economic Development Committee welcomes investment and business from any country to take part in the work of developing our new economic zones."
Yun said local officials have been tasked with drawing up the plans for the zones in their jurisdictions and are likely to formally submit them for approval to his commission within the next few months.
Jang was considered the second most powerful man in North Korea before his fall, which was announced last week and followed days later by his execution for a long list of anti-state crimes, including building a power base of his own to rival and possibly overthrow Kim and the ruling Workers' Party.
His removal leaves no clear No. 2 under Kim, whose inner circle now includes Vice Marshal Choe Ryong Hae, Premier Pak Pong Ju and the ceremonial head of state, Kim Yong Nam.
What will happen next in Pyongyang remains unclear, but North Korea watchers will be closely following the second anniversary of Kim Jong Il's death on Tuesday for clues. Of particular interest is whether Jang's wife, Kim Kyong Hui, the younger sister of Kim Jong Il, will be present in official ceremonies.