Renovate the dilapidated earthen house of grandpa and turn it into a "luxury house" after completion

My grandfather is a retired veteran in his 90s. The old house has an area of more than 200 square meters inside and outside. However, because the house is old and has a civil structure, it is very dangerous to climb up and down for repairs, resulting in dilapidated houses and leaks in rainy days. rain. After the renovation of the old house, Grandpa Zhang's house has become a unique "luxury house". Just a big courtyard with a gazebo made the city people around me want to go back to the countryside after seeing it!