Japanese tea ceremony

At Japanese weekend school where I teach, Japanese tea ceremony was held recently by one of the kid’s mother who is the tea ceremony teacher.
Before the tea ceremony, kids were just kids, restless, noisy, giggling and act silly.
At the tea ceremony, the teacher began to instruct “Pay attention what you smell,hear, see and taste…” All kids were state of stillness, totally different. Then she continued to explain Ichi-go ichi-e (一期一会, literally "one time, one meeting") which was written on Kakegiku (Japanese scroll painting or calligraphy mounted with silk fabric edges.)"You see your friends each other right in this moment,. But when you see each other next weekend, it will be different moment…."
According to wikipedia,the term is often translated as "for this time only," "never again," or "one chance in a lifetime."

I found what kind of philosophy behind the tea ceremony from Buddha in the cup of tea
Bellow is the excerpt

“

Sen no Rikyu, one of the greatest aesthetic geniuses of all time from Japan,who had been teaching Japanese tea ceremony which is a ritual choreography of preparing a drinking tea was once asked by one of his students , “Master, could you tell me what is the basic reason for this study?” The student had been training with him for 10 years.
Rikyu looked at the student and said, “The reason for tea ceremony( Cha-no-yu as it’s called in Japanese) first, you boiled the water, then you prepare the tea, and then you drink it, and that’s all.” (laughs) The student, I think, was quite upset to hear that answer for the reason how he’d spent 10 years to study just to boil the water, prepare the tea, drink it, and that’s all. Rikyu, seeing his expression, said, “Show me someone who truly understands these things, then I will become that person’s disciple.”
So, the challenge of tea, like the challenge of anything in life, whether you’re sitting and watching your breath or preparing a delicious dinner for your family, is how to do everything with our whole being, undivided. So, we’re not going over the shopping list while we’re whisking up the green tea. Our whole body, mind, and spirit participates and savors the beauty of that moment. That’s a lifetime of training, and it doesn’t matter how we get there. You can get there through just sitting and watching your breath. You can get there through chanting. You can get there through watching clouds passing over the mountain-top, through writing poetry, through improvising music. But the essence of it is that presence, that state of being.

“

I find the beauty of the essence of tea ceremony.
“This is the life time opportunity to meet each other whole heartedly and anything can happen from this communication between us “