President Pranab Mukherjee today left for home after a four-day visit to China that saw him meeting the top Chinese leadership and discussing the boundary issue and cooperation in combating terrorism besides the need for a predictable nuclear regime.<br/><br/>Mr Mukherjee, who made his first visit to China as President, met his Chinese counterpart Xi Jinping yesterday during which he told him that Sino-India relations have acquired strategic significance and if the two countries work together they can generate tremendous momentum for global peace and prosperity.<br/><br/>India also sought China's cooperation in international fora like the UN in the fight against terrorism and told Beijing that it should play a positive role in ensuring a predictable nuclear regime as New Delhi seeks to join the elite Nuclear Suppliers Group.