I wish there were more opportunities to practice with "một cách -adjective-" other than with "một cách kiên nhẫn."
This lessons tips says that using adverbs is not common in daily comversation. Therefore, i think, they don't teach much of these in Duolingo
Vâng, "/một cách/ kiên nhẫn" (trạng từ) : patiently (adv).
From Chinese 堅忍, lit. ‘hard endurance’
Stop downvoting these. If they’re not helping you, ignore them. You’re not the target audience; people familiar with Chinese languages or languages that borrowed from them extensively are. They’re immensely helpful to us.
Why is it "a patience"? And not "Cô ấy kiên nhẫn vẽ"