Ongoing and Planned Space Missions for High Energy Astrophysics in China: How to Reduce the Cost?

In this talk, I will introduce the ongoing and planned space missions, dedicated to high energy astrophysics in China, including X-ray missions e.g. HXMT, POLAR, and Einstein Probe, and gamma-ray missions e.g. DAMPE and HERD. I will briefly talk about the budget situation and possible ways to reduce the cost of space mission learned from the limited experience out of these space missions.