'Warn them that we shall defend our goods. Then leave it to them to clear off or to make the first attack. I hate firing at poor wretches such as these are, but, candidly, I look upon them as infinitely more dangerous than a well-fed mob.'

Rearing his head over the top of the barricade with which the doorway was now almost completely blocked, the Professor called loudly to the mob, and at once they came to a halt. Perhaps three hundred pair of hungry eyes were directed on his face.

'Good people,' he called, 'I beg of you to retire and be satisfied with what I have already said. If I feed you all, my stores will but allow for one meal at most, while I and my men must starve. Go, therefore, for if you persist I warn you I will defend this place till I and all are killed.'

A loud chorus of shouts greeted his words. Men shook their fists at him and brandished a hundred different weapons, while the very mention of food seemed to madden the desperate individuals. Then the rascal who had fired at the Professor, and who was leading the band, once more lifted his weapon and sent a second bullet thudding against the doorpost.

'Listen to him, comrades,' he bellowed. 'He admits that he has food there sufficient for all of us. Are then we who own the country to starve while foreign devils live on the fat of the land? Forward! We have cleared more than one roost now with more bantams in it to stand in our way.'

At once there was a rush outside. The covered way, which no doubt had sheltered many a thousand Mongolian in the old days, was soon crammed to overflowing, while still more of the mob thronged the stairs. Then with shouts the leaders cleared a patch for the men carrying the tree trunk.

'Rush at the barricade with it,' called the rascally leader. 'Smash it and then fetch out the food which is ours by right. You will know how to deal with the foreign devil and his supporters, my comrades.'

There was a growl from the mob, and then a roar, as the men bearing the tree trunk rushed forward. As for the defenders, they sprang to the loopholes which had been left and awaited the Professor's signal. It came in a moment, for the battering-ram almost levelled the barrier at the first effort.

'Fire on them!' shouted the Professor. 'Pick off every man who attempts to lift the tree. That is where our real danger lies. Once this barrier is down they will be on us; nothing can resist such numbers.'

David and Dick, with Ho-Hung and his comrades, as well as Chu-Li and his four fellow-soldiers, had before now each chosen an aperture for his weapon, and at once a hot fire was opened on the enemy. Meanwhile every available article was thrown on the barricade to strengthen it, for there were numbers of willing hands amongst the Professor's party. As for the mob outside, half a dozen fell at the first discharge, all of whom bore the ram, while every time a man leaned over to pick it up again he was fired at instantly. In three minutes a round dozen were biting the sand.