It was a restless wind that welcomed us to Mongolia, spilling defiantly into the neighbouring Chinese town of Ereen. Icy gusts from the Gobi ripped through the town, upsetting garbage bins and tossing street litter like candyfloss. If we were superstitious at all, this would have seemed like an ill omen, as we were preparing to cross the harsh desert on our rather wobbly bicycles. But we had cycled here from Thailand, passing through Laos, Vietnam and China. With over 7,900km in our legs, we weren&rsquot easily deterred.