A Weibo tipster claims that Huawei's "Tashan" semiconductor project will start all the way at the top with experimental 45nm silicon, built using fully indigenous technology. The post indicates that a 45nm Huawei part, likely built in collaboration with a Chinese fab, will be ready within one year.
https://www.notebookcheck.net/Huawei-back-to-square-one-is-apparently-planning-to-build-an-indigenous-45nm-chip-within-a-year.485577.0.html