All is ok for me. i have an intel wireless too. Maybe you can try to update your kernel with this :

https://app4deepin.com/linux-kernel-5-7-7-for-deepin/

https://app4deepin.com/repository/#kernel

Thank you.

But the pc laptop doesn't have internet access now. How to upgrade the kernel offline?

If you can access internet with another computer, download this file :

https://dl.bintray.com/app4deepi ... od1_5.7.7_amd64.deb

https://dl.bintray.com/app4deepi ... od1_5.7.7_amd64.deb

https://dl.bintray.com/app4deepi ... 7-xanmod1_amd64.deb

https://dl.bintray.com/app4deepi ... mware_1.187_all.deb

Optional :

https://dl.bintray.com/app4deepi ... _20190717-2_all.deb

https://dl.bintray.com/app4deepi ... _20190717-2_all.deb

Download this files and copy them to a folder on your computer, launch deepin terminal  and go to the folder where you have this downloded files. Then do this command :

sudo dpkg --force-all -i *.deb

Reboot

the links are not wokring. it says cannot find the path.

try this :

https://dl.bintray.com/app4deepi ... od1_5.7.7_amd64.deb

https://dl.bintray.com/app4deepi ... od1_5.7.7_amd64.deb

https://dl.bintray.com/app4deepi ... 7-xanmod1_amd64.deb

https://dl.bintray.com/app4deepi ... mware_1.187_all.deb

https://dl.bintray.com/app4deepi ... _20190717-2_all.deb

https://dl.bintray.com/app4deepi ... _20190717-2_all.deb

Hello again.

It returned the following message after "apt update":

E: 无法下载(unable to download) https://dl.bintray.com/app4deepin/Kernel/dists/apricot/main/binary-amd64/Packages.bz2  文件尺寸不符(File size not matched) (15784 != 15620)。您使用的镜像正在同步中？ [IP: 52.36.128.157 443]
   Hashes of expected file:
    - Filesize:15620 [weak]
    - SHA256:c2e2edcc610f7712865b23ae4b6dd15fed98bbf363f693db1631895abf786d4f
    - SHA1:7d84b1ed7c6ac8efa0cc12e2151a0d4b1c85008f [weak]
    - MD5Sum:bf5d8537f60fb347ca8f382ff46c9130 [weak]
   Release file created at: Fri, 17 Jul 2020 16:30:17 +0000
E: 部分索引文件下载失败。如果忽略它们，那将转而使用旧的索引文件。(Failed to download some index files. If ignore, old index files will be used.)

I have updated my repository today with new kernel. Wait a little and do apt update

Problem solved. Thank you.