Authoritative release by Beijing Geographic Information Public Service Platform：
https://beijing.tianditu.gov.cn/EMap/1/1/EMap.html
from this plateform, you may download three maps package:
- Map of Beijing.jpg
- Map of Beijing's Urban Area.jpg
- Map of the Capital's Core Area.jpg
you may also search for the service suppliers which the most commonly needed service points for foreign tourists by one click:
- currency exchange
- bank card services
- sim card services
- transit card services
- self-drive
- id services & accommodation registration
- tourist attractions
These maps are all vectors and can maintain high definition even when zoomed in.
info source:
https://airchinatransit.com/things-to-do/beijing-english-map-download-link