JavaScript-"Help" about how the "Xiaomi Route download" address for the movie download site was generated?

The target station is: http://www.4567.tv/film/id20949.html

小米

Don't know "https://d.miwifi.com/d2r/?url= Dgh1bmrlcjovl1fvrmxarepyt2k4dmzhwnbir1y4slvvnupuz3hkvgt6slvvmupvrxpkvuzdslvvmepvstrkvghdslvvmupvsxhkvul4tgtkru1ustrnq1zgt 0nwq05pvtrou1zgtmlwq09dvtrou1zgtlnvnvfpvknsq1zgt0nwqljpvkjsq1zgtknwq09dvkjsq1zgtlnwqljdvtvoetv0y0rsoe1qvtbnre00t1rnne5id3 lsrgc1uvvoqlfvvtrra0v4uxpbd01evkjpruuxuwpcrk5rstnome5etvh4b1bwuk5sbezeu1vkt1vfrkztmfzuu1zrme5sbznvekpcuza0mliwcznwvtfczkm 5yvdnpt0&src=xunbo "How did this address come from, to help everyone?"

Reply content:

The target station is: http://www.4567.tv/film/id20949.html

小米

Don't know "https://d.miwifi.com/d2r/?url= Dgh1bmrlcjovl1fvrmxarepyt2k4dmzhwnbir1y4slvvnupuz3hkvgt6slvvmupvrxpkvuzdslvvmepvstrkvghdslvvmupvsxhkvul4tgtkru1ustrnq1zgt 0nwq05pvtrou1zgtmlwq09dvtrou1zgtlnvnvfpvknsq1zgt0nwqljpvkjsq1zgtknwq09dvkjsq1zgtlnwqljdvtvoetv0y0rsoe1qvtbnre00t1rnne5id3 lsrgc1uvvoqlfvvtrra0v4uxpbd01evkjpruuxuwpcrk5rstnome5etvh4b1bwuk5sbezeu1vkt1vfrkztmfzuu1zrme5sbznvekpcuza0mliwcznwvtfczkm 5yvdnpt0&src=xunbo "How did this address come from, to help everyone?"

Documentation: one-click Download to Xiaomi router
http://s.miwifi.com/d2r/
Here is the detailed information, the following is a partial excerpt:

API Address
https://d.miwifi.com/d2r/

API function Description
This document describes the Xiaomi router one-click Download interface. A call to embed the interface in a Web page can provide the user with the ability to remotely initiate the download of the media file to the Xiaomi router. When the interface call is triggered, the user is first directed to the login page of the Xiaomi account. After users log in with Xiaomi account, they can see the Xiaomi router that is bound to their account and choose which Xiaomi router to download. If the user's current browser has logged in to the MI account, then no need to repeat the login, will be directly directed to select the download router page.

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