I just want to remind people of the public opinion map.I'm actually glad that China neither provided any sort of military support/aid nor form any military partnership/alliance in West Asia/Middle East. The only things China do with her military presence in the region are the anti-piracy patrols around Somalia and the peacekeeping forces in Lebanon under the auspices of the UN.
No matter how hard the calls for China to "step in, become the responsible big brother, and salvage XXX situations" - If those country's people themselves don't want to help themselves, then what's in for China to help them?
Besides, it's not like Iran is chummy with China either. The Iranian people even jeered at the Chinese people with the "Ching Chong Chang" types of racist slurs, all while licking the West despite being slapped in the face multiple times - All while China is one of the only few countries that are keeping the country afloat in amongst those crushing international sanctions. Remember that Chabahar Port deal with India in order to "counter China's Gwadar Port in Pakistan"?
Just go take a look around the military-watching discourse on Weibo - They don't exactly have a positive, flowery view of Iran, way before today's Israeli strike. "伊朗要升旗了" and "伊朗变成了筛子" are not phrases of complement.
I'd say this - Iran better gets its sh1t together, stop the "we wuz" kanging sh1t, and actually be humble in their dealings with China. Otherwise, good luck.

Iran is less favorable to China than Spain and Norway. I was about to say India until I realized that they were so pro US they were actually beating some countries in EU and NATO while India is mostly doing their own thing.
Russians are statistically very pro China in comparison.