I think you need to take a step back and try and understand what are you trying to achieve? Rather than skipping straight to how are you going to achieve it.
Dash is a Python abstraction layer over Plotly and ultimately React.js, components are built using React and properties are exposed that allow them to be updated and manipulated from the Python server.
While you can, with a little bit of difficulty, put other stuff inside a Dash application you will not get the callback controls over it that is what makes Dash useful.
pyecharts is a Python abstraction layer over echarts, which is built on top of zrender. Bridging these technologies is probably not going to be an easy task and likely will require a lot of maintenance. Perhaps if instead ask what you would like to do, e.g. Bar Chart animations with Dash, there might be an easy answer.
FYI: Plotly (and therefore Dash) offers multiple Map charts: https://plot.ly/python/maps/