What do chinese people understand by word 漫画 "manhua"?
Nowadays, Chinese usually use 漫画 for comics from all the world, including Japan/America/Europe etc.

And the term 连环画 (小人书/小儿书) is usually used for those native ones of China, almost published in the last century.

Reference:
绘本、连环画、漫画你知道他们有什么不同吗？
绘本、漫画和连环画的区别是什么？