1). concentric. Love each other. There is a poem in Lu Ji's "Gift to His Wife Gu Yanxian", which reads: "I mourn for his sorrow and feel the same." A poem in Lu Yun's "Gift to His Wife Gu Yanxian" in the Jin Dynasty: "Beauty is pregnant."

(2) refers to people with common interests or hobbies. Xie Lingyun wrote in the poem "Climbing the Peak of Shimen" in the Southern Song Dynasty: "I am sorry that there is no fellow traveler, * * * climbs the green ladder." Tang Jiazhi's poem "Leaving Autumn to Send to the High and Low Houses of Yang Village for Fengqiu": "I have friends with the same bosom, each in one place." Song Zhuxi's Charm of Wandering with Liu Shu: "I am more worried after my illness, and I would like to share a poem."

It refers to brothers and sisters. In Qing Dynasty, Qian Yong's "Lu Yuan Cong Hua Ke Wu Di Ke": "(Hu's four sons) are all martial arts masters, and there are four of them. It is rare in the south of the great river." Chen Qing Pei Zhi's "Xiang Xiao Yan Lu Rui Lan Xue's Tears Worship": "The rest of the family is pregnant with ten people, but the child is the smallest, the most beautiful and the most talented." Mao Xianglin's On Mountain Inks in Qing Dynasty: "I am pregnant with my third sister."