cooperation should be based on self-willingness, equality terms and mutual benefits.But he stressed that such cooperation should be based on self-willingness, equality terms and mutual benefits.But he stressed that such cooperation should be based on self-willingness, equality terms and mutual benefits.But he stressed that such cooperation should be based on self-willingness, equality terms and mutual benefits.But he stresengineering machinery, power and building materials.ButBut he stressed that such cooperation should be based on self-willingness, equality terms and mutual benefits.Li said the region should deepen cooperation in poverty reduction through the development of agriculture and expand people-to-people exchanges.