The emission factors data is from the China Emission Accounts and Datasets (CEADS) https://www.ceads.net.cn/data/
The following is the citation:

1. Shan et al. (2022) "City-level emission peak and drivers in China. Science Bulletin", doi.org/10.1016/j.scib.2022.08.024
2. Shan et al. (2018) "City-level climate change mitigation in China. Science Advances" 3. Shan et al. (2017) "Methodology and applications of city level CO2 emission accounts in China. Journal of Cleaner Production" 4. Shan et al. (2019) "An emissions-socioeconomic inventory of Chinese cities. Scientific Data"

The satellite data is from the National Institute for Environmental Studies, Japan https://db.cger.nies.go.jp/dataset/ODIAC/
The following is the citation:

Tomohiro Oda, Shamil Maksyutov (2015), ODIAC Fossil Fuel CO2 Emissions Dataset (Version name*1 : ODIACYYYY or ODIACYYYYa), Center for Global Environmental Research, National Institute for Environmental Studies, doi:10.17595/20170411.001. (Reference date*2 : YYYY/MM/DD)

MT is million tons
CGe10 is the emission in 10^10 g CO2
CGe10/person CO2 emission per capita
CGe10/$ CO2 emission per GDP