I am a new civil servant, serving the leaders. If you want to give your mobile phone number to the leader, what should you say?

If the handwriting is good, just write it directly, without too much content. Four items are enough: name, age, hometown and serial number. In his office when he is in a good mood or in private time (because he can't store the number in front of you as soon as you hand it over, he will definitely put it away first. If he puts it in his pocket, he will definitely forget it or throw it away. The result of putting it in the bag is also cleaning up. Just put it in the drawer and give it to him. Be generous. XXX, this is my contact information. You can ask me for some small things at ordinary times, and I will help you. All right!