I Live in Guangzhou China, always flew my air 3 almost every day with no problems, now get message fei zhu:
【民航局信息中心】您的无人驾驶航空器（实名登记标志 xxxxxxxx ）已侵入管制空域范围，请依照《无人驾驶航空器飞行管理暂行条例》有关规定，主动申报飞行活动（网址： https://uom.caac.gov.cn/ )。I will get the message after about 3 minutes of flying  the height is under 50 meters and distance is less 200 meters when i get it.

fei zhu:
[CAAC information center] Your UAV (real-name registration mark xxxxxxxx) has intruded into the controlled airspace. Please take the initiative to declare your flying activities in accordance with the relevant provisions of the "Interim Regulations on the Administration of Unmanned Aerial Vehicles." https://uom.caac.gov.cn/ ).  

     What ever the rules are they are, I would just like to know how can I find out what is controled air space and what is not?  Controled airspace is not area that show up on the dji app or are geo fenced. Is Controled airspace a hight problem or an area problem   One the uomo app the map will show areas that are in a green color they tend to be more in the coutry side.  I read some place that these are flying zones but the app its self will not say.  I messaged DJI they  said I will get the message when in controled air space, other than that they gave no information.  If any one has an imformation please let me know.  Thanks. Fei Zhu

Hi there, thank you for reaching out. We will further check it with our relevant team and revert you back soon. At the same time, in order to better assist, would you mind providing us with your device serial number? You could send us via PM, thanks.

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djiuser_MKD4mGHSeNYw Posted at 10-8 10:08
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Hi there,
thank you for reaching out.

Kindly inform us the full details of the issue that you experienced with your DJI product, and we will surely provide you with an accurate resolution after we review the details. Rest assured that we're committed to providing the best experience for our users.

Please keep us posted. Thank you for understanding.