Nepal and China, in 2019, agreed to develop 50 km road linking Rasuwagadhi and Kathmandu. The first stretch of 32-km long road will link Tokha to Chhahare with a 4.17-km tunnel while the second 19-km stretch will link Mailung with Syaphrubesi in Rasuwa district. The construction has not been started due to delayed feasibility study and pending detailed project report. However, a Chinese technical team, in 2020, has begun preliminary assessment of the Tokha-Chhahare-Gurjubhanjyang tunnel section and will gradually do same for the other sections of the road project.
Source
https://thehimalayantimes.com/business/chinese-technical-team-starts-preliminary-study