China vs Indonesia

China's $1,100/mo monthly cost (across 5 scored cities); Indonesia has no monthly cost data yet — not enough data to call a winner.

China's 3.3/5 safety score (across 5 scored cities); Indonesia's 1.2/5 safety score (across 1 scored city) — not enough data to call a winner.

China's 3.3/5 mobility score (across 5 scored cities); Indonesia's 1.8/5 mobility score (across 1 scored city) — not enough data to call a winner.

China's 3.5/5 culture score (across 5 scored cities); Indonesia's 3.5/5 culture score (across 1 scored city) — not enough data to call a winner.

China's passport reaches 52 destinations visa-free to Indonesia's 38 — China opens more doors without a visa. Passport strength shifts over years of naturalisation, not months of planning, so it's a long-horizon footnote — not scored in the tally.

China is better connected: 755M passengers/yr against Indonesia's 49M passengers/yr. China is busier than 85 of 87 countries worldwide; Indonesia is busier than 56 of 87 countries worldwide. China sees ~53 air passengers per 100 residents a year; Indonesia sees ~18 air passengers per 100 residents a year — a derived figure, not itself ranked.

China runs -10°C to 37°C for most people; Indonesia runs 24°C to 36°C for most people. Harbin runs colder, at -34°C. Depends on you — which range fits your tolerance is the real question here, not a score.