Wechat takes up a huge amount of storage space on my phone (Moto G5 plus). Almost all of it is due to the Wechat cache (which has ballooned to 11gb) but neither the app nor my phone settings allow me to clear the Wechat cache. When I use File Manager to open the Tencent-Micromsg-xlog folders, I see that a lot of space is taken up by files like MM_20190420.xlog or MM_20190430.xlog. What are these? Can I delete them to free up space? Otherwise, how do I clear my wechat cache? Thanks!