It is hard to say:' bye!'

I am working in a middle city far away from my family, every month I can be back once, and can only stay with my family for 3 days.'My son, say bye to your dad!' I told my son.'Can you stay here, I will miss you!'said my 3-year-old son.'But your dad have bought a ticket. I have to go now, my son!'My son embraced my legs, with tear full his eyes.'When I am back next time, I will buy lots of cars for you, ok?'Although my son has many toy cars, but he stil like cars!'A...OK' He knew he could not stop me leaving.'Give your dad a kiss then!'He give me a kiss, but my moustache made him uncomfortable,he found my electrical shaver, turned it on, and made it move around my mouth....'Bye-bye',At last, I opened the door, said to my my family sorrily.'Moment, please'said my son.He jumped on me, gave me a kiss....It is realy hard to say b-y-e...