Prep your midin accordingly, break off the end bunches that is a bit tough and woody. Just bend the midin till it breaks at a point naturally. If it doesn't it's fine, that means the midin is in good condition.
Discard any leaves that looks old and wilted too.
Heat a wok till it's hot. Add some sunflower oil and sautee the chopped garlic.
Sautee till it's fragrant, add the prepped midin and stir fry.
Add some oyster sauce and rice wine. Stir fry for 1-2 mins.
Season with salt.
Pour in the cornstarch slurry last. Taste and adjust seasoning.
Dish and serve. Eat immediately!!