Two conflicting WeChat messages about a dumpling-making event
Your class WeChat group contains two messages about the same event.
Message A, from 学生会, Monday: 「同学们注意：下星期六下午两点，在食堂二楼包饺子。每人交五块钱。请自己带碗和筷子。四点结束。」
Message B, from 李老师, Wednesday: 「更正一下：包饺子改到星期天上午十点，地点不变，因为星期六学校有篮球比赛，食堂要用。碗和筷子学校提供，不用带了。费用还是五块。请星期五以前在群里报名。」
Your friend Tane has read only Message A. He has already put a bowl and chopsticks in his bag, told his mum he is busy Saturday afternoon, and asks you whether he pays on the day. You read both messages in about forty seconds and need to answer accurately, including what is still unclear.
1. List the four details Tane has wrong or incomplete, and explain how you know Message B overrides Message A.
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Corrections:
- Time: 星期天上午十点, not 星期六下午两点 - a 20-hour error, and the biggest practical risk.
- Bowl and chopsticks: not needed; 学校提供, 不用带了.
- Place: unchanged - 食堂二楼. Do not change it just because the time changed.
- New requirement: 星期五以前在群里报名. Message A had no registration step.
- Cost: still 五块 - Tane is right about that, but see below on when to pay.
How I know B governs:
- 更正一下 is an explicit correction marker; it announces that what follows supersedes an earlier version.
- B is later and from 李老师, a named authority, rather than the student union.
- B is selective: it says what changed (时间) and what did not (地点不变, 费用还是五块). That selectivity is what makes it trustworthy as a correction rather than a completely new event.
- Watch 还是: here it means still, not or. Misreading it as 还是…还是… creates a false choice about the fee.
2. Tane asks whether he pays on the day. What can you tell him, and how would you find out?
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Honest answer: the messages do not say. Both versions state the amount (五块) but neither says when or how it is collected - no 交钱时间, no 微信转账, no 交给谁.
What is genuinely unclear:
- Whether payment is on Sunday at the door or in advance.
- Whether Tane is already on the registration list - B asks people to sign up by Friday but does not say who has.
- Whether the fee covers ingredients only (relevant if he has allergies and brings his own filling).
How to resolve it - ask a narrow question, not a general one: 「老师，请问五块钱是星期天交，还是现在交？」 A yes/no or either/or question is much easier to answer in a busy group than 老师，活动怎么安排？
Second move: check the group's registration list or ask whoever is collecting names, because if Tane has not registered by Friday, the payment question is irrelevant.
I would not tell him 应该当天交 on the basis of 每人交五块 - that is plausible but unverified, and guessing here costs him a wasted trip or an awkward conversation.
3. Using only the messages, what does 因为星期六学校有篮球比赛，食堂要用 tell you about the event and about what to expect on Sunday?
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What it tells you:
- Why the change happened: the canteen is booked for a whole-school basketball fixture on Saturday. The dumpling event was moved, not cancelled - so it is lower priority than the sports fixture but still supported.
- Who has authority: a 学生会 message was overridden by a teacher because a school-wide booking intervened. Student-organised events here sit under staff approval.
What to expect on Sunday, inferred:
- The venue may not be set up for you. The canteen was used for basketball on Saturday, so tables and equipment may still be in match configuration. Arrive at 9:50 rather than 10:00, and expect to help move things.
- Staff will be tired and busy. Keep questions short and specific.
- The 上午十点 start matters. A student who still believes 下午两点 will arrive four hours late, after the 四点 finish time in the original plan - so the timing error is the one to fix first when you talk to Tane.
Careful: 食堂要用 explains the canteen, not the whole school; it does not tell you whether the 学生会 or 李老师 will run the session.