Both have OP male and female leads who grow up together.
Male leads- Ning Que and Qin Lie grow against all odds, and gets more powerful with each near-death experience.
Both come from humble backgrounds, and rise to the highest level of powers that be.
The female leads- Sang Sang and Ling Yushi have hidden identities, are extremely powerful, and prophesied about as the great evils. Both are completely devoted to their respective male leads, and practically worship them.
The male leads on the other hand have romantic entanglements with other women- Mo Shan Shan for Ning Que, and Song Ting Yu for Yu Shi.
Both have amazing visuals, cgi and osts.

The friendships, familial affection, humour and character growth that made Hikaru no Go the best Chinese drama of the year can also be found in here, but to a lighter extent. But most of all, the thrill of competing in championships,...the risk, the courage, the disappointments and the adrenaline rush that go hand in hand with these high-risk gaming competitions...those wonderful instances that make it clear how invested you are in the lives of these characters...you'll find them in Cross Fire.
PS: Two hot guys to drool over, if you need an added incentive...

Same female lead, and same author.
And the whole air and setting.... It's pretty similar. Other than that, the major issues regarding the storyline are quite different.
Both follow the lives of multiple characters and couples, and also depict the workplace struggle.