{
 "asof": "2026-07-31",
 "generated_at": "2026-07-31T15:33:59Z",
 "history_days": 144,
 "method_version": 1,
 "note": "HKEX discontinued the northbound buy/sell split in August 2024; northbound is turnover-only since. The narrowing is part of the record — northbound NET flow is never estimated here.",
 "reading": {
  "date": "2026-07-31",
  "nb_sse_turnover_b": 159.927,
  "nb_szse_turnover_b": 194.175,
  "nb_turnover_b": 354.102,
  "sb_buy_b": 66.708,
  "sb_sell_b": 67.189,
  "southbound_net_b": -0.481
 },
 "source": "HKEX Stock Connect daily statistics (keyless official prints)",
 "units": {
  "nb_turnover_b": "CNY bn, total turnover, SSE+SZSE combined",
  "southbound_net_b": "HKD bn, buy minus sell, SSE+SZSE combined"
 }
}