China on Thursday remained evasive about the number of casualties suffered by it in the Galwan valley clash and also on the role of its troops. It didn't respond to queries on reports that it was building a dam on the Galwan river on the border to obstruct its flow. Asked about allegations that Indian soldiers were brutally attacked with iron rods and spikes by Chinese soldiers, foreign ministry spokesman Zhao Lijian reiterated China's allegation, squarely blaming Indian troops for the incident. “The right and wrong of this case is very clear and responsibility doesn't lie with the Chinese side,” he said.