The reciever, being stamped on both sides with the "sun" symbol or star shaped insignia means that this action (not barrel) was from or for the Republic of China ... (possibly produced there or produced for them and they stamped it later).

The barrel,however,definitely carries markings of the Proof marks of the Liege house of Belgium, as kabic correctly points out. The "E" means "Epreuve" or 'proof', while the LG is for Liege. I couldn't dig up anything on the "A" with the little star over it.

So, it would appear that this is a Chinese Mauser action, or an action produced for China and stamped by them. It definiltely looks like a Mauser 98 variant. China did make some of these themselves and some they produced weren't worthy as a pry bar. Yours looks differently than that to me, like maybe produced in a decent arsenal for
Chinese use, and then somewhere along the line someone recognized it's usefullness, screwed a decent 7 X 57 Belgium barrel into it, somebody appears to have done a nice job of cutting ad turning the bolt and adding a Buehler type swing safety. From the picture it appears to be other than a military trigger, so that's probably been swapped out for something nicer. And nice stock!
All in all it looks like a real sweet whitetail rifle sporting a vintage Weaver scope in a low power ... perhaps a fixed 3X or a fixed 2.5. If they were variables or fixed4X and above the objective bell (front one) usually had a flare to it rather than the straight tube on the front of yours.
That looks like a shooter's pet!