Drawing of a man and a girl ready to fight on the great wall of chinaDrawing of a man and a girl ready to fight on the Great Wall of China
Lecture with formulas on the blackboard in front of studentsLecture with formulas on the blackboard in front of students
A stone path across the sea. castle on the mountainA stone path across the sea. Castle on the mountain
Sunflower on the background of the sky and the roadSunflower on the background of the sky and the road