The term sounds vaguely familiar, like something I learned long ago, and a quick search tells me that it was a system of equal trade and investment in China in the first half of the 20th century. 

I chose the title with another thought in mind: the way it feels to leave the front door open on a perfect June afternoon. An open door policy made possible by a screen instead of glass, and perhaps only good for another day or two. 

So far, we’ve been able to get by without air conditioning in the house: opening and closing windows at strategic moments, gathering in the morning coolness like an arm full of crisp line-dried laundry.

They’re calling for much higher temps by week’s end, so we may have to give in and close up the house. But it’s been lovely to leave doors and windows open, to breathe in and out with the day.