This recipe makes an easy task more complicated. If you skip the water and simply steam your broccoli separately you can skip cooking down all the liquid.
Do the broccoli separately then skip the water and the corn starch. That is a silly step. It caused me to have to cook this dish down until everything in the wok was soggy and over done. That risk is avoided by eliminating the water and just using the orange juice and maybe a little marmalade (also skip the sugar if you use marmalade)