一封英文邀请信邀请一对夫妇来故宫玩

Hi there,
it has been a long time since the last time we saw each other. How are you and your family? We have been quite busy with our work here. I got promoted recently so there are a lot more for me to do; my wife has just got a new job, and my son has been preparing for his mid-year exam. I hope you are free sometime in the near future for a visit to my home as well as the famous Forbidden City, because we all miss you and your family terribly. It will be nice to get togehter again. Shall we make it next weekend?

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Dear XXX,
It's been a year since last time we met each other.I hope everything is going on very well on your side.
Spring is coming soon.It's best season to travel around.My wife and I are planning a visit to the Forbbiden City in Beijing.Do you know anything about Forbbiden City?It lies to the north of * Square.It was the imperial palace during the Ming and Qing dynasties.It is the world's largest palace complex and covers 74 hectares,with splendid painted decoration on these royal architectural wonders,the grand and deluxe halls and surprisingly magnificent treasures.Does it sound interesting?
My wife and I sincerely invite your wife and you to come and travel with us.Would you like to make a plan?Please let me know your decision as soon as possible.Thank you.
Yours truthfully
XXX