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The child asked him in "Meritorious Service" is the 11th episode.

Episode 11: At home, Yu Min forgets to sleep and work. Yu Xin asked Yu Min to fly a kite with him. Yu Min discussed with Yu Xin to go the day after tomorrow, but Yu Xin was clamoring to go today. Yu Min promised Yu Xin to make him a wooden plane, and the two also agreed to pull the hook.

Yu Xin didn't see his father the next morning, so he asked his mother where he had gone. Mom said he had gone to work, and Yu Xin asked him to come back for a long time. But Yu Qin doesn't know, so let him come over for dinner quickly and go to kindergarten after eating.

Synopsis

In the unit drama about Yu Min in the TV series Meritorious Service, Yu Min never told his family what he was doing because of the confidentiality of his scientific research work. Yu Min didn't go home for a long time in order to study the hydrogen bomb in the later plot. His wife Sun Yuqin and the children thought that Yu Min was dead. When Yu Min returned to the family again, Yu Min's daughter and son didn't recognize her father.