East Asia Forum published on 16 May 2020 an article titled "China's Djibouti Naval Base Increasing Its Power" by Jean-Pierre Cabestan, Hong Kong Baptist University.
The author writes that while the PLA's naval base in Djibouti is helping China gradually become a great power, movement is slow. The PLA is probably thinking of opening another overseas naval base, for example, in Gwadar, Pakistan.