So Duolingo is divided into sections and each section has a certain number of units and each unit has a certain number of lessons
Clicking at the back arrow by the section number on the top left lets you look at section listings
They have more units for English speakers learning Korean than English speakers learning Chinese
& they seem to be so devoted to Korean that they have more lessons for Chinese people learning Korean than for English people learning Chinese
If I counted correctly
Also there is a special feature in the Duolingo menu for English speakers learning Chinese to learn the phonetic pinyin way to represent Chinese sounds which was created in modern times and the Chinese pictographs, I did not count that towards the number of units.
