[4] The village of Sipsu (also spelt Sibsu, Sibsoo and Sipchoo) had some encounters in history, as it appears to have been the seat of administration of the surrounding Dichu basin.

[7] In 1863, the Eden Mission of British India, sent to negotiate an agreement with Bhutan regarding border relations, passed through Sipsu.

Undeterred, Eden left most of his entourage and supplies at Sipsu, and proceeded with a smaller contingent via Tule La and Sangbay, towards Ha.

The war did not see any action at Sipsu, but Dalingkot faced an attack by British troops, and quickly fell, while there was a serious battle at Samtse.

[10] At the end of the war, the Treaty of Sinchula (1865) was signed, in which unspecified "hill territory" of Dalingkot was ceded to the British as were all the duars to the south in return for an annual payment.