First, safe and sound.
Safe and sound, peace: peace. Sick: disease, disaster. There are no disasters and diseases. Describe that people or things are safe without accidents or damage. Also known as "nothing happened". The origin of the idiom: Feng Ming Menglong's "Awakening the World" Volume 29: "Work as usual in the hospital, and Duke Lu is safe and sound." Part of speech: formal; As predicate, attribute and adverbial; With praise. Synonym: safety, safety, safety as always.
Second, allusions.
In 266 BC, Zhao Huiwen, the monarch of the State of Zhao, died, and his son Taizi Dan was succeeded by Zhao Chengxiao. Being young, his mother Zhao is in charge of handling state affairs. Zhao is a wise and knowledgeable middle-aged woman. When she was just in charge of state affairs, Qin stepped up her attack on Zhao. Zhao was in danger and asked Qi for help. Qi asked Zhao to send her youngest son to Qi as a hostage before sending troops.
Zhao was reluctant to leave his youngest son, but after listening to the minister's advice, he often sent to Qi. On one occasion, the King of Qi sent messengers to Zhao with letters to greet Zhao. Wei Hou asked the messenger before opening the letter. "Qi's harvest is not bad, is it? Are people safe? Is the King of Qi healthy? " The envoy of Qi was very unhappy and said, "I was sent by the King of Qi to greet you;
Now, don't ask the king of Qi, ask the harvest and the people first. Can you put the lowly in front and the noble in the back? "Wei Hou smiled and said," no, if there is no harvest, how can anyone? If there is no people, how can there be a monarch? Can you give up the basics and just ask the questions on the side when you say hello? " Hearing this, the messenger was speechless. This allusion to "innocence" later evolved into the idiom "innocence".