This is elementary. https://cleantechnica.com/2022/01/31/learning-chinese-be-a-better-cleantech-advocate-or-investor-in-30-minutes-daily-part-1/ https://cleantechnica.com/2022/01/31/learning-chinese-be-a-better-cleantech-advocate-or-investor-in-30-minutes-daily-part-2/ https://cleantechnica.com/2022/01/31/learning-chinese-be-a-better-cleantech-advocate-or-investor-in-30-minutes-daily-part-3/
