写一封邮件，询问对方是否有意参加旅游团队，并提供相关信息。
你计划组织一次旅游团队，想通过邮件邀请感兴趣的人加入，具体内容和地点如下，请编写一封邀请邮件。
内容：完成本次旅游计划需要至少 20 人，行程为 5 天 4 夜，游玩景点包括博物馆、动物园、自然公园等，预计花费每人 $500 - $600 不等。
地点：中国南部省份
Subject: Invitation to Join Our Travel Group

Dear [Name],

I hope this email finds you well. I am writing to invite you to join our travel group for an exciting tour to China's southern province. We plan to visit various tourist attractions such as museums, zoos, and nature parks over a 5-day 4-night period.

We are looking for at least 20 people to join us, and the estimated cost per person would be between $500 to $600. This amount includes accommodation, transportation, attraction tickets, and meals. We believe that this trip will be an excellent opportunity for us to explore new places and create lasting memories.

Please let us know if you are interested in joining our group. Also, feel free to reach out to us if you have any questions or want more details about the trip.

Looking forward to hearing from you soon.

Best regards,

[Your name]