Rinse and pat dry zucchini with paper towels.
Remove the ends and cut zucchini diagonally into 2-inch chunks while rotating it one-quarter turn between cuts.
Heat oil to medium-high and add zucchini into the pan.
Do not stir zucchini for 1 minute to allow caramelization.
Then sautee zucchini and leave for another minute to get even caramelization on all the zucchini chunks.
Make a well in the pan and add the minced garlic.
When the garlic is fragrant, sautee the zucchini briskly for 1 minute.
Add salt, oyster sauce, chili garlic sauce, and sautee to mix well.