Give face to Feng Bing

You really don't have a chance, since the names involved with the Empress Dowager were influential leaders in the government, and few investigations later, throves of evidence were uncovered, leading to them being promptly removed. That in turn, severely limited Empress Dowager YI's power in the government and accelerated your own consolidation of power.

Forget giving face to Feng Bing by turning a blind eye to what she did. At that point of time, you might even consider leading a punitive expedition to locate her wayward partner if asked.

Still, with your base of power safe, and the scheduled fight with Feng Bing in another month, you are free to pursue other things. You might want to practice with one of your generals or even better wage war with another country. You might want to explore trade with other countries or you want to go through the list of concubines to determine who you would like to call. Maybe you might want to see your master to improve your skills or learn about a particular issue you've been wondering about all this time. You can just continue relaxing with Ran Ran, or perhaps explore the red light district.

There's so much things to do!