Du Ru stood at the front gate of Beijing's First Cotton Textile Factory. An old man sat at the entrance, staring intently at the stranger as if he were a thief.,"Is there something This is the family courtyard of the textile mill, outsiders are not allowed in. If you have nothing to do, get lost and don't wander around here.",The old man stared at Du Ruo for a few seconds, then muttered with a thoughtful expression:。