Who played the old four when the years were full of flowers, and what was his ending?

Zhou Ying's adoptive father Zhou Laosi is played by Liu Peiqi, a national first-class actor who graduated from the PLA Art Academy. At the same time, he is also an actor of China National Theatre, and has participated in many dramas and film and television dramas. In the popular TV series "Flowers Are Full Moon", he plays the adoptive father of Zhou Ying who is cynical but like his father. In the episode 5 1 broadcast yesterday, Zhou Laosi, who had gone back, blocked Hu's knife and left the last clue to the mystery of life before he died.