The IDE's speed is impressive, which is to be expected of an IDE that is very simple, caters to a single device (or family of devices) and is in its beta release. The overall functionality requires quite a lot of work to use this.
The help is not searchable and the articles are unsorted (it may be correctly sorted in Chinese, but I can't tell). Several articles are non-existent.
The editor is quite basic for 2018, although it gets the job done.
Three ways to find example code: they are present either in menu Code Generate, menu Help --> Refer Source (??!??) or menu File --> Demo Project. I would prefer to have a single place to find it.
The "Code Generate" menu is an interesting idea - as expected, for a such simple device the configuration options are limited and may be simply enough.
Non-existing compiler options, which is somewhat weird when compared to a regular C compiler with its include directories, libraries, etc. The example code itself has an assembly feel to it.
The compiler/linker messages could use an overhaul: "Use 10 memory, Remain 54 unused memory" message is childish and almost useless without units (Hex? Decimal? Words? Bytes?) and type of memory (RAM? ROM?)
I don't have a debugger to evaluate it, but Dave's video shows what it looks like the device registers on the top right- I can't tell how complete this list is, but that is a key difference between a decent IDE debugger and the generic hack-a-jobs around.