Dad's stir fry beef with special sauce

When my siblings and I were younger, when mom was away, my dad would at times take over the kitchen. Granted he's not as good a chef as my mom (whose standards are sky high for the record) but he dished up yummy meals (usually 1 pot meal for convenience) and being health conscious, dad would usually ensure there is lots of vegetables. One of our favourites is dad's stir fry beef with kailan flower (芥兰花）, its gravy we would never fail to savour with whatever rice is left in our bowls. 

Context: Mom and sis are at Penang for holiday. This afternoon my phone beeped:

NO WAY I WAS GONNA SAY NO TO STIR FRY BEEF! And "special sauce", LOL 😂

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Later, served promptly at 7pm:

Interestingly, dad did 3 dishes:

1. Stir fry beef with french beans 

2. Stir fry kailan (according to mom, this is Cantonese style as there was both ginger and garlic); and

3. Fried egg (should have taken a pic).

We contributed ABC soup that was very delicious too!

It was a very hearty and wholesome meal. Needless to say, I finished all the rice with the beef gravy. 😊😋 I'm glad my dad at 73yo is still able and capable of whipping up a decent meal, and I am glad my children got a taste of their grandfather's cooking... :)

Edit: After dinner, my dad also cut orange and served it to the girls!