The second half of the sentence is "Swear to be the master of China."

During the summer vacation of 1911, Mr. He, the grandfather of He Dianzhen, confronted Zhou Enlai. He said the first sentence: "I will not be a slave of the great powers." Zhou Enlai thought about it and corrected the next sentence: "Swear to be a Chinese Master." Mr. He said happily: "Okay! Excellent!" Mr. He saw the future of the motherland and the hope of the nation.