HONG KONG (AP) — Early signs suggest China ’s biggest online shopping event is struggling to persuade anxious consumers to spend more, despite discounts. The Singles’ Day festival, a major discount campaign comparable to Black Friday and Cyber Monday in the U. S. , centers on Nov. 11. But it begins weeks earlier and is seen as a barometer of the broader economy. Retail data platform Syntun said cumulative sales as of Oct. 31 totaled just over 1 trillion yuan ($154 billion), broadly in by...