What is the virtue of double happiness, family harmony and frugality, and being responsible for the younger generation?

Double happiness, diligence and virtue, the younger generation has the responsibility. The family faces multiple happy events, and the whole family feels happy. Life is thriving, and it is hard to come by. "Double happiness" means that two happy events come together. From Chapter 83 of Strange Things Seen in Twenty Years: "So all the guests stood up together and celebrated again. Everyone says: this is the double happiness. The town is also complacent. Strange things witnessed in the past twenty years is an autobiographical novel by Wu, a writer in the late Qing Dynasty. It is one of the four condemnation novels in the late Qing Dynasty.