Uhhh
Can someone tell me what velocity you need to launch an object at in order to reach orbit? And what accelerative forces you need in order to achieve that?
How big is this railgun? How are they handling heat from atmospheric friction? You have the same problem going up too quickly as you get coming down too quickly.
NASAs version of this is called StarTram, it's feasible but there are some major technical hurdles.
In the prototype stage, the launch velocity at the end of the gun would not be anywhere near the 10 km/s you would need to achieve orbit. But you could reach a sizable fraction, say 3 km/s. Becuase the velocity gained during rocket flight is not linear with mass, having that 3 km/s inital boost would reduce your overall rocket mass by like 80%. The rocket would clear the atmosphere and then fire its motor to gain a stable orbit.
We can achieve 3 km/s with current technology, it would require like a 100 km long maglev in a very low pressure tube, likely built on the side of a mountain. It could probably reduce space flight costs by a factor of 10 if completed.
Building the proposed goal of a human rated version capable of reaching near 10 km/s at the end point would be much more difficult. The tube would have to span over 1,000 km and I don't believe we have the technology yet to maintain the vacuum or supply enough power quickly enough to power it.
China is likely proposing to build a testbed system to start researching the concept. Probably on a larger scale than NASA has but nowhere near a complete system.
It's probably a high speed launch assist, not the entire source of escape velocity.
That sounds so funny though.
How would you even do that? Build something like a particle accelerator except it's a launching railgun the size of China?
I mean yeah why not if it means you can partially reach escape velocity with like solar powered electricity vs going the entire way 100% on burning rocket fuel
Those 
for FF8 - you got your remake baby!
I found a YouTube link in your comment. Here are links to the same video on alternative frontends that protect your privacy:
Talk about a superpower
Meanwhile in the west, Elon Musk is blowing up launch pads because he fancies himself to be a rocket engineer.
They're building The Chandelier?
high speed railgun
Elon get fucked ...
Elon BTFO
Sure, “rockets”.
It's true, China doesn't have rockets. The Tiangong space station was launched into space purely with the concussive force of Xi Jinping fucking your mom.
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