Immovable object vs irresistable force - day 2

After several hours of work I now have what I can best describe as a concrete and steel spider sculpture. Having stripped out the 12 internal bars, removing 4 completely I'm down to the core concrete which is only about 50cms thick so that should be a breeze! (not). While working away at this task I have been thinking about the Japanese term 'nintai' which means endurance or perseverance.

Traditional Japanese martial arts often refer to 'nintai' as a very worthy value and essential to cultivate as a martial artist and improved human being. And the character 'nin' is also a very beautiful, balanced character containing the characters for sword and heart within it. I have decided the character 'nin' will be prominent in my dojo to remind me daily of lifelong 'nintai' as well as the tasks involved in building this place.