UCPN (Maoist) Chairman Pushpa Kamal Dahal Prachanda has said that there was a need of national unity for the implementation of the new constitution At the ninth anniversary ceremony of 'Hamro Radio' 103.4MZ at Charikot today, Chairman Prachanda said that the new constitution is changeable as some issues are still remaining to be included in it. He said, "National Convention of the Nepali Congress has been recently concluded. We are now holding discussion for national unity." Chairman Prachanda expressed belief that Prime Minister KP Sharma Oli's China visit would be very fruitful on the issue of diversity of trade and reducing dependency. He also suggested that the working procedure issued by the government to make the National Reconstruction Authority accountable towards the people should be revised.