C715 Coming
"Yes, there is a unique rule." Liu Yan's eyes lit up as she whispered.
"What's the pattern?" I asked.
"Every time he comes here it's raining." I asked.
"Is it raining every time he comes?" I asked.
"Yes." Liu Yan nodded.
I blinked my eyes and thought back carefully. It seemed like it had rained a few times this month
