Well, technically there can't be any buy order ... Each new buy order will directly match an existing sell order because the lowest price is 1 sat, unless someone tries to buy at a very high price (higher that the highest in sell orders) which is very likely not to happen (anytime soon).
An odd thing is that according to
https://chainz.cryptoid.info/ncl/#!rich the total of coins is 750,000,225 (owned by 6 addresses ...) and the total in c-cex sell orders is 2,774,723,698.83. Where do these come from?
Objectively speaking, this project has no escrow, no source code, no white paper, no wallet, no nothing, well there is the website ... Too many red flags and incoherences ...