'Important stage'
"An essential part of building a new model for relations between great powers is ensuring we have a healthy, stable and reliable military-to-military relationship," Donilon said.
During a meeting with Donilon on Monday, Xi said that Sino-US relations were at "an important stage connecting the past and the future".
However, building trust between the two militaries is regarded as one of the main challenges the two countries face in mending relations that have been troubled by issues that include trade disputes and allegations of Chinese cyberattacks, analysts said.
Steps to increase positive interactions between the two sides' militaries have been modest so far, including joint anti-piracy drills in the Gulf of Aden and a project to simulate a response to natural disasters.
White angels in Chongqing South West Hospital