How to cook century eggs?

Yesterday, I was planning to cook century eggs congee for ys. I'm still a beginner here. I only know how to cook plain porridge with salted eggs, pickled lettuce and maybe additional vegetables. Hmm...I bought meat, century eggs, 豆苗(bean seedlings) and fish sauce. I thought there is garlic, salt and pepper in his kitchen but I couldn't find them. Oh no! So I shall just cooked plain congee instead and stir fried bean seedlings with meat. As for the century eggs, just hard boiled and cut?

Here come the point! How do all of you actually cook century eggs? Clean the outer layer of tea leaves and wash, then hard boiled them? Raise up your hand if you think the same as me. Actually, century eggs are ready to serve. All you need is to crack the eggs and peel off the eggs' shell. Tadah! You will see the nice black jelly look alike century eggs. How many of you think the same as me? Or you already know the actual way to prepare century eggs? 

Before i found this. I was cleaning the outer layer and thinking how long should I hard boil them? But I doesn't really trust my instinct so, I went to Google. Then I saw this video. Luckily, I haven't started doing it and felt like I'm so sua gu (mountain tortoise). I learn new thing today. Century eggs no need to cook at all unlike other eggs like chicken eggs, salted eggs, etc. 

Well, here is my first home cook plain dinner for him. Kinda plain. Really envy those who can cook well. Mummy, I shall start learning from you. Mr.ys, may you rate my cooking skills? Any improvement needed? How was the taste? Plain congee pass? Stir fried bean seedlings pass? Hehe. Must tell me the truth k? Get well soon. Love you. (^з^)-☆