Some background: Imagines, it's a world in which China is partitioned in 1857, with Southern China coming under a Cantonese-speaking monarchy, and the north remaining under the Qing. They are reunified in the 1930s, and thus would require an official language and lingua franca. China is limited to China proper. Taiwan was successfully colonized by the Dutch.
This new language would ideally combine the phonologies of Mandarin dialects and Cantonese, or a good compromise. I attached an image of an in-progress table of consonants below. Does it look like the phonology of an actual Chinese dialect? What changes would you make? Do you have any recommendations on how to further develop this (including tones, vowels, endings, romanization, etc)?