The fortifications along the Manchurian-Chinese border were once again fully occupied by Japanese troops and restriction were once again put in place. It was like a return to the Cold War period between Japan and the Republic of China and the person to blame was the Chinese President. Similar restrictions had been imposed between the borders of the Royal Crown Colony of Hong Kong and the Vietnamese -Chinese border. Tibet had seen the building of some border fortifications and stepped up patrols by the Tibetan Defense Force backed by Indian Troops.