If you are an apprentice in a hotel, you'd better not invite the master to dinner. Your peers are enemies. Although your intentions are good, you will feel uncomfortable for the host. It's ok to send something to make up for it. The master will think you have a heart. Besides, giving something is not the most important thing. You are diligent and have a good eye. You are ahead of the master in everything. People think you are kind and will pass on all your skills to you. In short, it is best to make the master feel like his family.