Peel off fibrous layer of the stems, separate leaves from stems.
Then cut stems into 1-1/2 inch length.
In a wok, bring stock to boil.
Add in wolf berries, and garlic. Cover and allow to boil for 1 minute.
Then add in stems into boiling stock.
Season with sugar, salt, and white pepper. Cover and allow to cook for 1 minute.
Add in century egg and salted egg, then cover and cook for 2 minutes.
Then add in leaves, and cover to cook until wilted, about 2 minutes.
Next, stir in beaten egg and allow it to set.
Remove from heat, and drizzle in 1/2 tsp sesame oil.