How to counter Xin Zhao
Let us take a look on how to beat Xin Zhao. We will look at champions who are strong against Xin Zhao and who are weak against Xin Zhao. Use win rate, gold difference and creep score difference at minute 10 to find the best 
Jungle champion who counters Xin Zhao. You can already win in champion select with the right counters for Xin Zhao. If you want to know how to counter Xin Zhao then you need to take into account the best picks vs Xin Zhao and the worst picks vs Xin Zhao. This Xin Zhao counter data is based on matches played by Pros on patch 15.14 and previous ones. It is important to see whether Pros counter picked Xin Zhao or whether they played as Xin Zhao.
Champions used by Pros to counter pick Xin Zhao
Looking at the matches from Pros (see table Pros counter picked Xin Zhao) we can see that they picked 
Pantheon most often to counter pick Xin Zhao. The matchup Pantheon vs Xin Zhao occured 91 times. Xin Zhao has 47 wins and 44 losses in this matchup. Learn how to counter pick Pantheon to get another perspective on the data.
Lane outcome for Xin Zhao
When looking at Xin Zhao counters you will notice that win rates alone are not conclusional. Therefore we provide an overview (see table Lane Outcome) where you can see the lane outcome of Pros who played Xin Zhao. The lane outcome of Xin Zhao consists of three outcomes: Win, Loss or Draw. Let's take a look of Xin Zhao lane and match outcome for specific matchups. Considering the lane outcome and the match outcome of a specific matchup, might enable you to find the right counter for Xin Zhao.
Conclusion
Analyze the available data and learn how to beat Xin Zhao. To master Xin Zhao take also a look on Xin Zhao builds and runes for Xin Zhao. Good luck, Summoner!