Zhang is not a polyphonic character, but has only one pronunciation: (Putonghua Pinyin pronunciation)
Zhang
Interpretation 1. Open and expand. The shop is open. Tighten. 4. Enlarge and exaggerate. 5. Indulge, unrestrained. 6. Cooking and socializing. 7. panic, hurry. 8. Look, look. 9. Star name, one of the twenty-eight nights. 10. quantifier. 1 1. Last name.
I hope I can help you.