Xiaobai called "Grandpa Grandpa". Two days later, Grandpa passed away. This family taught Xiao Bai to call "grandma", and Xiao Bai quickly learned to call "grandma". As a result, two days later, grandma passed away.
Next, it's the turn to learn to shout "Dad". Xiaobai's father is very nervous. He immediately learned to shout "Dad". For the next two days, Dad stayed up all night and couldn't sleep well.
As a result, two days later, Lao Wang next door died.