Pakistan's Prime Minister Nawaz Sharif has said that Pak-China economic corridor would not only benefit both the countries but the entire region, Geo News reported. During a visit to China Southern Power Grid Corporation here Sunday, Nawaz Sharif said Kashgar-Gwadar project would bring economic change in the region. The government was working on energy projects on priority basis as it was the key issue of the country, the prime minister said and added that past government did not focus towards this. Nawaz Sharif welcomed investment of Chinese companies in Pakistan, saying that it was encouraging.