Why are there no direct flights and connecting flights from Phnom Penh to Hangzhou?

There are direct flights and connecting flights from Phnom Penh to Hangzhou. According to relevant information, Cambodian JC International Airlines (hereinafter referred to as JC Airlines) will soon open a direct flight from Hangzhou to Phnom Penh. This route is another international route from Hangzhou to Cambodia opened by Jincheng Airlines on the basis of Hangzhou = Sihanoukville Port.