SEOUL, Jan 3 - North Korean leader Kim Jong Un inspected a greenhouse farm construction site along the country's border with China on Friday, and encouraged youths and troops working on the construction in the new year, state media KCNA said on Saturday.

In recent weeks, Kim has made a series of visits to various military and economic facilities to confirm their progress ahead of the key Ninth Party Congress of the Workers' Party, expected to convene early this year to set out major policy goals.