美方言而无信，似乎已成为中美经贸问题磋商过程中的常态。
日前，美方再次宣称，拟对3000亿美元中国输美商品加征10%关税。
“7”，一个引发各方关注的数字
虽然这样的“言而无信”已经屡见不鲜，但美方在关税方面的“反复无常”还是对市场和货币产生了一定的影响。
你*日我**常生活都离不开的人民币，这两天就成为了聚光灯下的焦点。
8月5日，人民币兑美元离岸和在岸汇率先后突破“7”的整数关口，引发各方高度关注。
人民币汇率缘何“破7”？未来走势怎样？“破7”又有何影响？一时间各种疑问声不绝于耳。
The yuan fell against the U.S. dollar on Monday, weakening beyond the key seven-per-U.S. dollar level for the first time in more than a decade.
外部风险变化致人民币“破7”
针对人民币“破7”的原因，中国人民银行表示，此次人民币“破7”，受单边主义和贸易保护主义措施及对中国加征关税预期等影响。
央行还用一个非常形象的比喻来形容“破7”：“人民币汇率‘破7’，这个‘7’不是年龄，过去就回不来了，也不是堤坝，一旦被冲破大水就会一泻千里；‘7’更像水库的水位，丰水期的时候高一些，到了枯水期的时候又会降下来，有涨有落，都是正常的。”
According to People's Bank of China (PBOC), the slide was influenced by unilateralism, trade protectionist measures and the expectation of additional tariffs on Chinese goods. The yuan exchange rate now is at an appropriate level in line with China's economic fundamentals and market demand.
The bank said it was a reflection of normal fluctuations in the supply-demand relationship and the international currency market.
PBOC used a metaphor to explain the yuan’s breaching 7-level: "The figure seven is not our days that leave us, never to return, or a dam that will roll non-stop when the water floods in. It's more like the water level in the reservoir, it rises and falls during different periods.”
人民币未来走势
有很多人担心，“破7”之后，人民币会持续贬值。
那么未来人民币的走势到底如何？
央行表示，从宏观层面看，当前中国经济基本面良好，经济结构调整取得积极成效，增长韧性较强，宏观杠杆率保持基本稳定，财政状况稳健，金融风险总体可控，国际收支稳定，跨境资本流动大体平衡，外汇储备充足，这些都为人民币汇率提供了根本支撑。
China's current economic fundamentals are solid from the macro perspective, commented PBOC, adding marked results have been gained in terms of economic structural adjustment and economic growth has so far remained resilient, with overall steadiness in a slew of key indicators from the likes of macro leverage ratio, cross-border capital flows, foreign exchange reserves, and financial risks.
对于你我来说，“破7”代表什么？
“破7”的消息在社交网络上也引发了网友们的关注。
不少人不太了解“破7”的含义， “热心”网友还试着用通俗浅显的话语来解释了人民币“破7”。
不过大多数网友们来说，大家更关注的是“破7”对日常生活的影响：如出国旅游、海外留学是否会受影响。
“我要出国旅游了，现在兑换外币亏大了”
“我马上要交学费了，感觉汇率一变，一来一去要多交好多钱。”
“是不是以后代购东西，要涨价了？”
As yuan slid past key 7-level, heated discussion towards yuan exchange rate was also sparked among net users. And many netizens worried whether the slide would have direct influence on their daily life, like studying and traveling abroad.
对于民众们关注的问题，央行方面表示，“过去20多年，人民币对美元和一篮子货币升的时候多、贬的时候少，民众们的主要金融资产在人民币上，受到最好的保护，其对外的购买力稳步攀升，这些均能从老百姓出国旅游、境外购物、子女海外上学中反映出来。”
而对于企业，央行方面表示不希望企业过多暴露在汇率风险中，支持企业购买汇率避险产品规避汇率风险。不过人民银行建议，要专注于实体业务，不要将精力过多用在判断或投机汇率趋势上，要树立“风险中性”的财务理念。
“合则两利，斗则俱伤”
针对美方宣称拟对3000亿美元中国输美商品加征10%关税这一消息，中国国务院关税税则委员会今天表示，8月3日后新成交的美国农产品采购暂不排除进口加征关税，中国相关企业已暂停采购美国农产品。
China said it would not rule out the possibility of levying additional tariffs on U.S. farm produce imports agreed upon in deals made after August 3, and several Chinese companies in the sector have halted purchases of U.S. farm produce, the Chinese Ministry of Commerce (MOFCOM) said on Monday.
China's Ministry of Foreign Affairs made a similar statement on Tuesday.
The move came after the U.S. plans to impose additional 10-percent tariffs on 300 billion U.S. dollars' worth of Chinese imports, which seriously violated the consensus reached by the two heads of state in Osaka in June.
After the Osaka meeting between the two heads of state, China has actively demonstrated its sincerity in purchasing U.S. agricultural products while making considerable progress.
此前，中方一直以实际行动落实两国元首大阪会晤共识，并在采购美农产品方面积极显示合作诚意。
造成这一令人遗憾的结果，责任完全在美方一次次出尔反尔，一次次极限施压。
“合则两利，斗则俱伤”——这个道理不知美国何时能够学会？