https://www.globaltimes.cn/page/202309/1298901.shtml
http://ecipe.org/publications/the-uks-first-international-trade-negotiation/?chapter=all
https://gcaptain.com/china-europe-rail-lines-supply-china/?subscriber=true&goal=0_f50174ef03-401209d0eb-170450703&mc_cid=401209d0eb&mc_eid=4069c37bba
https://www.politico.eu/wp-content/uploads/2020/05/LetterVDL12052020EN.pdf